DIMETHICONE 5 (DMETKON 5)

DIMETHICONE 5 (DMETKON 5)

DIMETHICONE 5(DMETKON 5)

CAS No.: 9016-00-6

EC No.: 203-497-4

Synonyms:

DIMETHICONE 5; DMETKON 5; SILCOREL(R) ADP1000 ANTIFOAM COMPOUND; SILICONE OIL DC 200; SILICONE FLUID; REDUCED VOLATILITY POLYDIMETHYLSILOXANE; POLYDIMETHYLSILOXANE 158`000; POLYDIMETHYLSILOXANE 16`000; POLYDIMETHYLSILOXANE 173`000; POLYDIMETHYLSILOXANE 1`850; OCTAMETHYLTRISILOXANE; 107-51-7; Dimethicone 5; Trisiloxane, octamethyl-; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; Dimeticone; Dimethicone 5s; 1,1,1,3,3,5,5,5-Octamethyltrisiloxane; Dimethicone 5 350; Sentry Dimethicone 5; dimeticonum; Dimeticona; Polysilane; Viscasil 5M; dimethyl-bis(trimethylsilyloxy)silane; UNII-9G1ZW13R0G; Mirasil DM 20; CCRIS 3198; 63148-62-9; Dow Corning 1664; Belsil DM 1000; Dimeticonum [INN-Latin]; EINECS 203-497-4; Dimeticona [INN-Spanish]; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; Dimethicone 5 350 [USAN]; 9G1ZW13R0G; CCRIS 3957; CHEBI:9147; HSDB 1808; Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl-; Dimethylbis(trimethylsilyloxy)silane; Dimethyl polysiloxane, bis(trimethylsilyl)-terminated; MFCD00084411; DC 1664; Dimethyl polysiloxane, dimethyl-terminated; alpha-(Trimethylsilyl)-omega-methylpoly(oxy(dimethylsilylene)); Poly(oxy(dimethylsilylene)), alpha-(trimethylsilyl)-omega-methyl-; MFCD00134211; Polydimethylsiloxane, trimethylsiloxy terminated; Ophtasiloxane; Silicone oil; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; Dimethylbis(trimethylsiloxy)silane; Dimeticone [INN]; Dimethicone 50; octamethyl-trisiloxane; PDMS; Pentamethyl(trimethylsilyloxy)disiloxane; Dimethicone 5 macromolecule; TYU5GP6XGE; UNII-TYU5GP6XGE; Dimethicone 5 [USAN:NF]; UNII-H8YMB5QY0D; Dimethicone 5 [USAN:BAN]; H8YMB5QY0D; ACMC-2098ws; UNII-2Y53S6ATLU; UNII-5L1VVC3K8O; UNII-RGS4T2AS00; EC 203-497-4; Octamethyltrisiloxane, 98%; Octamethyltrisiloxane (MDM); 2Y53S6ATLU; 5L1VVC3K8O; DSSTox_CID_20710; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; DSSTox_RID_79558; RGS4T2AS00; UNII-92RU3N3Y1O; UNII-D1R3R4B8M8; DSSTox_GSID_40710; SCHEMBL23459; Sentry Dimethicone 5 Dispension; Siliconoil Pharma 100 cSt.; UNII-RO266O364U; Silicone oil, high temperature; 92RU3N3Y1O; Cross-Linking Siloxane Emulsion; D1R3R4B8M8; Linear polydimethylsiloxane n=1; CHEMBL2142985; DTXSID9040710; UNII-MCU2324216; CHEBI:31498; CTK4A5474; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; CXQXSVUQTKDNFP-UHFFFAOYSA-; dimethylbis(trimethylsiloxy)siliane; RO266O364U; [(CH3)3SiO]2Si(CH3)2; Tox21_301002; ANW-15818; CO9816; Silane, dimethylbis(trimethylsiloxy)-; AKOS015840180; ZINC169747808; Antifoam compound for anhydrous systems; FS-4459; LS-2478; MCU2324216; NCGC00164100-01; NCGC00164100-02; NCGC00254904-01; CAS-107-51-7; CC-33282; Poly(dimethylsiloxane), hydroxy terminated; SC-23246; DB-040764; LS-163457; 619-EP2298313A1; 619-EP2302015A1; 619-EP2308861A1; FT-0631598; FT-0696355; NS00041459; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; O0257; O9816; Trisiloxane,1,1,1,3,3,5,5,5-octamethyl-; 2737-EP2292227A2; 2737-EP2305668A1; 2737-EP2308861A1; 2737-EP2374787A1; 3139-EP2269996A1; 3139-EP2272837A1; 3139-EP2284148A1; 3139-EP2305627A1; 3139-EP2308562A2; 3139-EP2372017A1; C07261; S12475; A801717; C-14030; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; J-001906; Poly(dimethylsiloxane), viscosity 1.0 cSt (25 C); Q2013799; octamethyltrisiloxane;Trisiloxane, octamethyl-;TRISILOXANE; Intermediate viscosity polydimethylsiloxane antifoam emulsion, 20% active, viscosity 1500cst; Intermediate viscosity polydimethylsiloxane antifoam emulsion, 30% active, viscosity 1500cst; Intermediate viscosity polydimethylsiloxane antifoam emulsion, 10% active, viscosity 1000-2000cst; Intermediate viscosity polydimethylsiloxane antifoam emulsion, 10% active, viscosity 800-2000cst; DIMETHICONE 5; DMETKON 5; DIMETHICONE 5; DMETKON 5; Intermediate viscosity polydimethylsiloxane antifoam emulsion, 20% active, viscosity 1000-2000cst; Intermediate viscosity polydimethylsiloxane antifoam emulsion, 30% active, viscosity 1000-2000cst; DIMETHICONE 5; DMETKON 5

DIMETHICONE 5

Polydimethylsiloxane (PDMS) Dimethicone 5 ( DMETKON 5 ), also known as dimethylpolysiloxane or Dimethicone 5, belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones.[1] PDMS is the most widely used silicon-based organic polymer due to its versatility and properties leading to a manifold of applications.[2] It is particularly known for its unusual rheological (or flow) properties. PDMS is optically clear and, in general, inert, non-toxic, and non-flammable. It is one of several types of silicone oil (polymerized siloxane). Its applications range from contact lenses and medical devices to elastomers; it is also present in shampoos (as it makes hair shiny and slippery), food (antifoaming agent), caulking, lubricants and heat-resistant tiles.

Contents

1 Dimethicone 5 ( DMETKON 5 ) Structure

1.1 Dimethicone 5 ( DMETKON 5 ) Branching and capping

2 Dimethicone 5 ( DMETKON 5 ) Mechanical properties

3 Dimethicone 5 ( DMETKON 5 ) Chemical compatibility

4 Dimethicone 5 ( DMETKON 5 ) Applications

4.1 Dimethicone 5 ( DMETKON 5 ) Surfactants and antifoaming agents

4.2 Dimethicone 5 ( DMETKON 5 ) Hydraulic fluids and related applications

4.3 Dimethicone 5 ( DMETKON 5 ) Soft lithography

4.4 Dimethicone 5 ( DMETKON 5 ) Stereo lithography

4.5 Dimethicone 5 ( DMETKON 5 ) Medicine and cosmetics

4.5.1 Dimethicone 5 ( DMETKON 5 ) Skin

4.5.2 Dimethicone 5 ( DMETKON 5 ) Hair

4.5.3 Dimethicone 5 ( DMETKON 5 ) Flea treatment for pets

4.6 Dimethicone 5 ( DMETKON 5 ) Foods

4.7 Dimethicone 5 ( DMETKON 5 ) Condom lubricant

4.8 Dimethicone 5 ( DMETKON 5 ) Domestic and niche uses

5 Dimethicone 5 ( DMETKON 5 ) Safety and environmental considerations

6 Dimethicone 5 ( DMETKON 5 ) See also

7 Dimethicone 5 ( DMETKON 5 ) References

8 Dimethicone 5 ( DMETKON 5 ) External links

Dimethicone 5 ( DMETKON 5 ) Structure

The chemical formula for PDMS Dimethicone 5 ( DMETKON 5 ) is CH3[Si(CH3)2O]nSi(CH3)3, where n is the number of repeating monomer [SiO(CH3)2] units.[3] Industrial synthesis can begin from dimethyldichlorosilane and water by the following net reaction:

{displaystyle n{ce {Si(CH3)2Cl2}}+(n+1){ce {H2O->HO[-Si(CH3)2O-]_{mathit {n}}H}}+2n{ce {HCl}}}{displaystyle n{ce {Si(CH3)2Cl2}}+(n+1){ce {H2O->HO[-Si(CH3)2O-]_{mathit {n}}H}}+2n{ce {HCl}}}

The polymerization reaction evolves hydrochloric acid. For medical and domestic applications, a process was developed in which the chlorine atoms in the silane precursor were replaced with acetate groups. In this case, the polymerization produces acetic acid, which is less chemically aggressive than HCl. As a side-effect, the curing process is also much slower in this case. The acetate is used in consumer applications, such as silicone caulk and adhesives.

Dimethicone 5 ( DMETKON 5 ) Branching and capping

Hydrolysis of Si(CH3)2Cl2 generates a polymer that is terminated with silanol groups (−Si(CH3)2OH]). These reactive centers are typically “capped” by reaction with trimethylsilyl chloride:

2 Si(CH3)3Cl + [Si(CH3)2O]n−2[Si(CH3)2OH]2 → [Si(CH3)2O]n−2[Si(CH3)2O Si(CH3)3]2 + 2 HCl

Silane precursors with more acid-forming groups and fewer methyl groups, such as methyltrichlorosilane, can be used to introduce branches or cross-links in the polymer chain. Under ideal conditions, each molecule of such a compound becomes a branch point. This can be used to produce hard silicone resins. In a similar manner, precursors with three methyl groups can be used to limit molecular weight, since each such molecule has only one reactive site and so forms the end of a siloxane chain.

Well-defined PDMS Dimethicone 5 ( DMETKON 5 ) with a low polydispersity index and high homogeneity is produced by controlled anionic ring-opening polymerization of hexamethylcyclotrisiloxane. Using this methodology it is possible to synthesize linear block copolymers, heteroarm star-shaped block copolymers and many other macromolecular architectures.

The polymer is manufactured in multiple viscosities, ranging from a thin pourable liquid (when n is very low), to a thick rubbery semi-solid (when n is very high). PDMS molecules have quite flexible polymer backbones (or chains) due to their siloxane linkages, which are analogous to the ether linkages used to impart rubberiness to polyurethanes. Such flexible chains become loosely entangled when molecular weight is high, which results in PDMS` unusually high level of viscoelasticity.

Dimethicone 5 ( DMETKON 5 ) Mechanical properties

PDMS is viscoelastic, meaning that at long flow times (or high temperatures), it acts like a viscous liquid, similar to honey. However, at short flow times (or low temperatures), it acts like an elastic solid, similar to rubber. Viscoelasticity is a form of nonlinear elasticity that is common amongst noncrystalline polymers.[4] The loading and unloading of a stress-strain curve for PDMS do not coincide; rather, the amount of stress will vary based on the degree of strain, and the general rule is that increasing strain will result in greater stiffness. When the load itself is removed, the strain is slowly recovered (rather than instantaneously). This time-dependent elastic deformation results from the long-chains of the polymer. But the process that is described above is only relevant when cross-linking is present; when it is not, the polymer PDMS cannot shift back to the original state even when the load is removed, resulting in a permanent deformation. However, permanent deformation is rarely seen in PDMS, since it is almost always cured with a cross-linking agent.

If some PDMS Dimethicone 5 ( DMETKON 5 ) is left on a surface overnight (long flow time), it will flow to cover the surface and mold to any surface imperfections. However, if the same PDMS is poured into a spherical mold and allowed to cure (short flow time), it will bounce like a rubber ball.[3] The mechanical properties of PDMS enable this polymer to conform to a diverse variety of surfaces. Since these properties are affected by a variety of factors, this unique polymer is relatively easy to tune. This enables PDMS to become a good substrate that can easily be integrated into a variety of microfluidic and microelectromechanical systems.[5][6] Specifically, the determination of mechanical properties can be decided before PDMS is cured; the uncured version allows the user to capitalize on myriad opportunities for achieving a desirable elastomer. Generally, the cross-linked cured version of PDMS resembles rubber in a solidified form. It is widely known to be easily stretched, bent, compressed in all directions.[7] Depending on the application and field, the user is able to tune the properties based on what is demanded.

Overall PDMS Dimethicone 5 ( DMETKON 5 )has a low elastic modulus which enables it to be easily deformed and results in the behavior of a rubber.[8][9][10] Viscoelastic properties of PDMS can be more precisely measured using dynamic mechanical analysis. This method requires determination of the material`s flow characteristics over a wide range of temperatures, flow rates, and deformations. Because of PDMS`s chemical stability, it is often used as a calibration fluid for this type of experiment.

The shear modulus of PDMS Dimethicone 5 ( DMETKON 5 ) varies with preparation conditions, and consequently dramatically varies in the range of 100 kPa to 3 MPa. The loss tangent is very low (tan δ ≪ 0.001).[10]

Dimethicone 5 ( DMETKON 5 ) Chemical compatibility

PDMS Dimethicone 5 ( DMETKON 5 ) is hydrophobic.[6] Plasma oxidation can be used to alter the surface chemistry, adding silanol (SiOH) groups to the surface. Atmospheric air plasma and argon plasma will work for this application. This treatment renders the PDMS surface hydrophilic, allowing water to wet it. The oxidized surface can be further functionalized by reaction with trichlorosilanes. After a certain amount of time, recovery of the surface`s hydrophobicity is inevitable, regardless of whether the surrounding medium is vacuum, air, or water; the oxidized surface is stable in air for about 30 minutes.[11] Alternatively, for applications where long-term hydrophilicity is a requirement, techniques such as hydrophilic polymer grafting, surface nanostructuring, and dynamic surface modification with embedded surfactants can be of use. [12]

Solid PDMS Dimethicone 5 ( DMETKON 5 ) samples (whether surface-oxidized or not) will not allow aqueous solvents to infiltrate and swell the material. Thus PDMS structures can be used in combination with water and alcohol solvents without material deformation. However most organic solvents will diffuse into the material and cause it to swell.[6] Despite this, some organic solvents lead to sufficiently small swelling that they can be used with PDMS, for instance within the channels of PDMS microfluidic devices. The swelling ratio is roughly inversely related to the solubility parameter of the solvent. Diisopropylamine swells PDMS to the greatest extent; solvents such as chloroform, ether, and THF swell the material to a large extent. Solvents such as acetone, 1-propanol, and pyridine swell the material to a small extent. Alcohols and polar solvents such as methanol, glycerol and water do not swell the material appreciably.[13]

Dimethicone 5 ( DMETKON 5 ) Applications

Surfactants and antifoaming agents

PDMS Dimethicone 5 ( DMETKON 5 ) is a common surfactant and is a component of defoamers.[14] PDMS, in a modified form, is used as an herbicide penetrant[15] and is a critical ingredient in water-repelling coatings, such as Rain-X.[16]

Dimethicone 5 ( DMETKON 5 ) Hydraulic fluids and related applications

Dimethicone 5 ( DMETKON 5 ) is also the active silicone fluid in automotive viscous limited slip differentials and couplings. This is usually a non-serviceable OEM component but can be replaced with mixed performance results due to variances in effectiveness caused by refill weights or non-standard pressurizations.[citation needed]

Dimethicone 5 ( DMETKON 5 ) Soft lithography

PDMS Dimethicone 5 ( DMETKON 5 )is commonly used as a stamp resin in the procedure of soft lithography, making it one of the most common materials used for flow delivery in microfluidics chips.[17] The process of soft lithography consists of creating an elastic stamp, which enables the transfer of patterns of only a few nanometers in size onto glass, silicon or polymer surfaces. With this type of technique, it is possible to produce devices that can be used in the areas of optic telecommunications or biomedical research. The stamp is produced from the normal techniques of photolithography or electron-beam lithography. The resolution depends on the mask used and can reach 6 nm.[18]

In biomedical (or biological) microelectromechanical systems (bio-MEMS), soft lithography is used extensively for microfluidics in both organic and inorganic contexts. Silicon wafers are used to design channels, and PDMS is then poured over these wafers and left to harden. When removed, even the smallest of details is left imprinted in the PDMS. With this particular PDMS block, hydrophilic surface modification is conducted using plasma etching techniques. Plasma treatment disrupts surface silicon-oxygen bonds, and a plasma-treated glass slide is usually placed on the activated side of the PDMS (the plasma-treated, now hydrophilic side with imprints). Once activation wears off and bonds begin to reform, silicon-oxygen bonds are formed between the surface atoms of the glass and the surface atoms of the PDMS, and the slide becomes permanently sealed to the PDMS, thus creating a waterproof channel. With these devices, researchers can utilize various surface chemistry techniques for different functions creating unique lab-on-a-chip devices for rapid parallel testing.[5] PDMS can be cross-linked into networks and is a commonly used system for studying the elasticity of polymer networks.[citation needed] PDMS can be directly patterned by surface-charge lithography.[19]

PDMS Dimethicone 5 ( DMETKON 5 ) is being used in the making of synthetic gecko adhesion dry adhesive materials, to date only in laboratory test quantities.[20]

Some flexible electronics researchers use PDMS Dimethicone 5 ( DMETKON 5 ) because of its low cost, easy fabrication, flexibility, and optical transparency.[21]

Dimethicone 5 ( DMETKON 5 ) Stereo lithography

In stereo lithography (SLA) 3D printing, light is projected onto photocuring resin to selectively cure it. Some types of SLA printer are cured from the bottom of the tank of resin and therefore require the growing model to be peeled away from the base in order for each printed layer to be supplied with a fresh film of uncured resin. A PDMS layer at the bottom of the tank assists this process by absorbing oxygen : the presence of oxygen adjacent to the resin prevents it adhering to the PDMS, and the optically clear PDMS permits the projected image to pass through to the resin undistorted.

Dimethicone 5 ( DMETKON 5 ) Medicine and cosmetics

Activated Dimethicone 5 ( DMETKON 5 ), a mixture of polydimethylsiloxanes and silicon dioxide (sometimes called simethicone), is often used in over-the-counter drugs as an antifoaming agent and carminative.[22][23] It has also been at least proposed for use in contact lenses.[24]

Silicone breast implants are made out of a PDMS Dimethicone 5 ( DMETKON 5 ) elastomer shell, to which fumed amorphous silica is added, encasing PDMS gel or saline solution. [25]

In addition, PDMS Dimethicone 5 ( DMETKON 5 ) is useful as a lice or flea treatment because of its ability to trap insects.[26] It also works as a moisturizer that is lighter and more breathable than typical oils.

Dimethicone 5 ( DMETKON 5 ) Skin

PDMS Dimethicone 5 ( DMETKON 5 ) is used variously in the cosmetic and consumer product industry as well. For example, PDMS can be used in the treatment of head lice on the scalp[26] and Dimethicone 5 is used widely in skin-moisturizing lotions where it is listed as an active ingredient whose purpose is “skin protection.” Some cosmetic formulations use Dimethicone 5 and related siloxane polymers in concentrations of use up to 15%. The Cosmetic Ingredient Review`s (CIR) Expert Panel, has concluded that Dimethicone 5 and related polymers are “safe as used in cosmetic formulations.”[27]

Dimethicone 5 ( DMETKON 5 ) Hair

PDMS Dimethicone 5 ( DMETKON 5 ) compounds such as amoDimethicone 5, are effective conditioners when formulated to consist of small particles and be soluble in water or alcohol/act as surfactants[28][29] (especially for damaged hair[30]), and are even more conditioning to the hair than common Dimethicone 5 and/or Dimethicone 5 copolyols.[31]

Dimethicone 5 ( DMETKON 5 ) Flea treatment for pets

Dimethicone 5 Dimethicone 5 ( DMETKON 5 ) is the active ingredient in a liquid applied to the back of the neck of a cat or dog from a small one time use dose disposable pipette. The parasite becomes trapped and immoblised in the substance and thus breaks the life cycle of the insect.

Dimethicone 5 ( DMETKON 5 ) Foods

PDMS Dimethicone 5 ( DMETKON 5 ) is added to many cooking oils (as an antifoaming agent) to prevent oil splatter during the cooking process. As a result of this, PDMS can be found in trace quantities in many fast food items such as McDonald`s Chicken McNuggets, french fries, hash browns, milkshakes and smoothies[32] and Wendy`s french fries.[33]

Under European food additive regulations, it is listed as E900.

Dimethicone 5 ( DMETKON 5 ) Condom lubricant

PDMS Dimethicone 5 ( DMETKON 5 ) is widely used as a condom lubricant.[34][35]

Dimethicone 5 ( DMETKON 5 ) Domestic and niche uses

Many people are indirectly familiar with PDMS Dimethicone 5 ( DMETKON 5 ) because it is an important component in Silly Putty, to which PDMS imparts its characteristic viscoelastic properties.[36] Another toy PDMS is used in is Kinetic Sand. The rubbery, vinegary-smelling silicone caulks, adhesives, and aquarium sealants are also well-known. PDMS is also used as a component in silicone grease and other silicone based lubricants, as well as in defoaming agents, mold release agents, damping fluids, heat transfer fluids, polishes, cosmetics, hair conditioners and other applications. PDMS has also been used as a filler fluid in breast implants.

It can be used as a sorbent for the analysis of headspace (dissolved gas analysis) of food.[37]

Dimethicone 5 ( DMETKON 5 ) Safety and environmental considerations

According to Ullmann`s Encyclopedia, no “marked harmful effects on organisms in the environment” have been noted for siloxanes. PDMS is nonbiodegradable, but is absorbed in waste water treatment facilities. Its degradation is catalyzed by various clays.[38]

Polydimethylsiloxane

PDMS Dimethicone 5 ( DMETKON 5 )

PDMS Dimethicone 5 ( DMETKON 5 )

Dimethicone 5 ( DMETKON 5 ) Names

Dimethicone 5 ( DMETKON 5 ) IUPAC name poly(dimethylsiloxane)

Dimethicone 5 ( DMETKON 5 ) Other names PDMS, Dimethicone 5, dimethylpolysiloxane, E900

Identifiers

Dimethicone 5 ( DMETKON 5 ) CAS Number 63148-62-9

Dimethicone 5 ( DMETKON 5 ) 3D model (JSmol) n = 12: Interactive image

Dimethicone 5 ( DMETKON 5 ) none

Dimethicone 5 ( DMETKON 5 ) ECHA InfoCard 100.126.442 E number E900 (glazing agents, …)

Dimethicone 5 ( DMETKON 5 ) UNII 92RU3N3Y1O

Dimethicone 5 ( DMETKON 5 ) CompTox Dashboard (EPA) DTXSID0049573

Dimethicone 5 ( DMETKON 5 ) Properties

Dimethicone 5 ( DMETKON 5 ) Chemical formula (C2H6OSi)n

Dimethicone 5 ( DMETKON 5 ) Density 965 kg/m3

Dimethicone 5 ( DMETKON 5 ) Melting point N/A (vitrifies)

Dimethicone 5 ( DMETKON 5 ) Boiling point N/A (vitrifies)

Dimethicone 5 ( DMETKON 5 ) is a silicone oil that is also known as polydimethylsiloxane (PDMS). It has viscoelastic properties. Dimethicone 5 is used as a surfactant, antifoaming agent, carminative in various products such as medical devices, food products, and lubricants. It is used in a number of health and beauty products including hair care products such as shampoo, conditioner, leave-in conditioner, and de-tangling products. On skin, it is also observed to have moisturizing actions 6,8.

A study found that that the 100 % Dimethicone 5 ( DMETKON 5 ) product is a safe and highly effective head lice treatment for children and may serve as less toxic and less resistance-prone alternative to pesticide-containing products.

Stearoxy Dimethicone 5, Dimethicone 5, Methicone, Amino Bispropyl Dimethicone 5,Aminopropyl Dimethicone 5, AmoDimethicone 5, AmoDimethicone 5 Hydroxystearate,Behenoxy Dimethicone 5, C24-28 Alkyl Methicone, C30-45 Alkyl Dimethicone 5, C30-45 Alkyl Methicone,Cetearyl Methicone, Cetyl Dimethicone 5, Dimethoxysilyl Ethylenediaminopropyl Dimethicone 5, Hexyl Methicone, HydroxypropylDimethicone 5,Stearamidopropyl Dimethicone 5, Stearyl Dimethicone 5, Stearyl Methicone,and VinylDimethicone 5 At Puracy, we take natural skincare seriously. Discover what Dimethicone 5 is, how it`s used, and why it`s more harmful than you might think.As an eco-friendly skincare brand, Puracy wants to set the record straight about what Dimethicone 5 is and why we never use it in our products.If you`ve ever used a makeup primer with a silky or slippery feel, it probably had some version of Dimethicone 5 (polydimethylsiloxane) in it. Because molecules of this silicone-based polymer are too large for the skin and hair to absorb, these products leave behind a thin layer. As a result, you get shinier-looking and smoother-feeling skin and hair a major reason for the popularity of Dimethicone 5 in cosmetics.Board-certified dermatologist Dr. Julie Jackson states that Dimethicone 5 does not interact with the stratum corneum (the top layer of the skin). It works by forming a film that prevents the loss of water through the skin, thus keeping the skin moisturized. It also works as an emollient, filling the spaces between cracks in the skin.There are hundreds of Dimethicone 5 uses in personal care products, with the most popular being diaper rash cream, moisturizer, hand lotion, and liquid foundation. This ingredient allows products to be applied seamlessly. In makeup primers, it prevents foundation from changing colors and cracking.Most hair care companies use Dimethicone 5 and silicone to coat the hair cuticle and make detangling easier. A lot of this comes down to these ingredients affordability and effectiveness. There are simply very few eco-friendly, Dimethicone 5-free products that can provide the same results.After years of research and development with expert chemists and testers, Puracy Natural Shampoo and Conditioner are rare examples of Dimethicone 5-free hair products that manage to leave all hair types moisturized, bouncy, and shiny.Puracy is proud to be one of the first companies to use this 100% sustainable and biodegradable emollient, which seamlessly replicates the effects of both Dimethicone 5 and silicone. When pressed on whether Dimethicone 5 can clog pores and lead to acne, Dr. Jackson concluded, There is no evidence that Dimethicone 5 can cause acne.Even though its an unnatural, man-made substance, Dr. Jackson agrees that Dimethicone 5 is a good chemically-inert moisturizer. But it isnt biodegradable and the current environmental research isnt positive. As a result, well never include it in any Puracy formulas.The first step to avoiding Dimethicone 5 is by carefully reading labels and looking for products that pledge to use biodegradable, renewable ingredients. Next, choose items that are Dimethicone 5, silicone-, and sulfate-free like every Puracy personal care product.Dimethicone 5 (also known as polydimethylsiloxane) a silicon-based polymer is a man-made synthetic molecule comprised of repeating units called monomers. Silicon is the second most abundant element in the Earth`s crust (after oxygen). Dimethicone 5 is one of the most widely used ingredients in cosmetics and personal care products and can also be found in many cooking oils, processed foods, and fast food items.According to 2019 data in U.S. FDAs Voluntary Cosmetic Registration Program (VCRP), Dimethicone 5 was reported to be used in 12,934 products. This included products for use near the eye, shampoos and conditioners, hair dyes and colors, bath oils, skin care products, bath soaps and detergents, suntan preparations and baby products.Dimethicone 5 works as an anti-foaming agent, skin protectant, skin conditioning agent, and hair conditioning agent. It prevents water loss by forming a barrier on the skin. Like most silicone materials, Dimethicone 5 has a unique fluidity that makes it easily spreadable and, when applied to the skin, gives products a smooth and silky feel. It can also help fill in fine lines/wrinkles on the face, giving it a temporary plump look.Dimethicone 5 is an important component in several toys, including Silly Putty, to which it imparts its unique viscosity and elastic properties, and Kinetic Sand, which mimics the physical properties of wet sand and can be molded and shaped into any desired form. Dimethicone 5 is also a critical ingredient in rubbery silicone caulks, adhesives, and aquarium sealants, as well as water-repelling coatings, such as Rain-X.f you were to ask your friends, “What is Dimethicone 5?” you`d likely get a lot of blank stares. Buuut I`m also willing to bet you`d hear some very, very opinionated responses (if, you know, your friends happen to be beauty editors). Silicones (like Dimethicone 5) in cosmetics is a controversial topic, and for every person who loves them and swears by their silicone-based makeup primer, there`s another person who actively avoids all silicones in skincare, haircare, and makeup.So what`s the deal? Is Dimethicone 5 okay to use, or do you need to overhaul your medicine cabinet? Welp, allow me to present you with the facts and expert insights from a dermatologist and trichologist about using Dimethicone 5 in your skincare and hair products so that you can make that decision for yourself. Because, spoiler, it really is a you decision in the end.Dimethicone 5 is a silicon-based polymer that, when used in beauty products, gives the formula an incredibly smooth, velvety, slippery feel that you either love or hate (although I`ll never understand the people who hate it TBH. I freakin` love the smooth feeling of silicones).But Dimethicone 5 is not only used for its sensory propertiesit also helps to temporarily smooth fine lines and wrinkles, functions as an emollient (aka a skin-conditioning agent), and also has some occlusive properties (meaning it prevents water loss by creating a seal or a barrier on your skin). And because of these properties, you`ll usually find Dimethicone 5 in your foundations, makeup primers, hair products, moisturizers, etc. Basically, unless a label specifically says it`s silicone-free, you can almost guarantee it`s in ev-ery-thing.Despite what the haters may say, according to the Cosmetic Ingredient Review Panel, Dimethicone 5 is safe when used in cosmetic products. What`s more, the CIR Expert Panel also says because of the large molecular weight of Dimethicone 5, it`s unlikely that it can be absorbed into the skin in a significant way. Board-certified dermatologist Dhaval G. Bhanusali, MD, isn`t concerned either: “I think, all too often, people put things in categories and say, `all of this is bad,`” he says. “But in this case, I don`t know of many colleagues who are concerned with Dimethicone 5 in skincare products.”Although Dimethicone 5 is fine for use on the skin, things get a little trickier when using it on your hair, mainly because it can coat your strands and weigh them down (which is not great for curls or fine hair). But, “if you have dry, damaged hair that`s prone to tangles, Dimethicone 5 can help create that sleek, slippery feel, making detangling easy and giving the appearance that the hair is super-conditioned and healthy,” says trichologist and creator of Colour Collective, Kerry E. Yates. “Dimethicone 5 is also heavily used in styling products to help `glue` the cuticles down to create that smooth, shiny effect in hair.”In short, yes. The reason why you might experience dry hair from using a Dimethicone 5-based formula is that the product builds up, which prevents the hair from achieving a proper moisture balance. This is why excess use of Dimethicone 5 can result in dry, brittle ends that are prone to breakage.Just because the experts say Dimethicone 5 is not the enemy the internet has made it out to be, it doesn`t mean you have to use it. Dimethicone 5 has its pros and cons, so if you`ve read the above and decided you still don`t want to use it, don`t! No one`s making you! The beauty of an oversaturated beauty market is that you have tons of silicone-free options to use instead, like the below:Dimethicone 5 in its simplest form is polydimethylsiloxane, also known as silicone oil, but more commonly called Dimethicone 5. Silicone oils are derived from silica (sand and quartz are silicas).Dimethicone 5 comes in various viscosities, this one is 350 centistokes, a medium viscosity which offers excellent barrier properties when used in skin protectant formulations. It adds slip and glide, reducing tackiness. It offers conditioning properties when used in hair and skin care applications.Used at a rate of 1% to 30%, Dimethicone 5 conforms to the FDA`s Tentative Final Monograph on OTC Skin Protectants. However, provided you make no drug claims for it, Dimethicone 5 does not have to be declared as an active ingredient, nor does your product or facility need to conform to OTC drug production standards. Dimethicone 5 can be added to any cosmetic and declared on the ingredient label in descending order. When using Dimethicone 5 in cosmetic formulations, one should be guided by the usage rates in the Cosmetic Ingredient Review (CIR) tables (see our Reference Room for links to these PDFs) as these apply to cosmetics rather than OTC products.The CIR lists Dimethicone 5 in the Cosmetic Ingredients Found Safe as Used in the following amounts,Dimethicone 5 is promoted as a defoaming agent for relief of abdominal pain due to retained gas and for colic in infants. It has been suggested that it may provide mucosal protection3 and it is included in many combined antacid preparations. It is also used to improve visibility during endoscopy. This article reviews the actions and clinical uses of Dimethicone 5.Dimethicone 5 (also known as polydimethylsiloxane or PDMS) is technically called a silicone-based polymer. More simply, its a silicone oil with certain properties that make it extremely popular in today`s personal care properties.In hair care products, Dimethicone 5 is used to provide smoothness, particularly in conditioners and detanglers, where the ingredient helps smooth hair and provide better comb-through. Because Dimethicone 5 leaves a sort of covering on the hair strands, it can also make hair appear shinier.In accordance with CIR Procedures, because it has been at least 15 years since the original safety assessment was published, the Panel should consider whether the safety assessment of Stearoxy Dimethicone 5, Dimethicone 5, Methicone,Amino Bispropyl Dimethicone 5,Aminopropyl Dimethicone 5, AmoDimethicone 5, AmoDimethicone 5 Hydroxystearate,Behenoxy Dimethicone 5, C24-28 Alkyl Methicone, C30-45 Alkyl Methicone, C30-45 Alkyl Dimethicone 5, Cetearyl,Methicone, Cetyl Dimethicone 5, Dimethoxysilyl Ethylenediaminopropyl Dimethicone 5, Hexyl Methicone,HydroxypropylDimethicone 5, Stearamidopropyl Dimethicone 5, Stearyl Dimethicone 5, Stearyl Methicone, and Vinyl Dimethicone 5 should be re-opened. An exhaustive search of the worlds literature was performed for studies dated 1998 forward. A synopsis of the relevant new data is enclosed Stearoxy Dimethicone 5, Dimethicone 5, Methicone, Amino Bispropyl Dimethicone 5,Aminopropyl Dimethicone 5, AmoDimethicone 5, AmoDimethicone 5 Hydroxystearate,Behenoxy Dimethicone 5, C24-28 Alkyl Methicone, C30-45 Alkyl Dimethicone 5,C30-45 Alkyl Methicone, Cetearyl Methicone, Cetyl Dimethicone 5, Dimethoxysilyl,Ethylenediaminopropyl Dimethicone 5, Hexyl Methicone, HydroxypropylDimethicone 5,Stearamidopropyl Dimethicone 5, Stearyl Dimethicone 5, Stearyl Methicone, and VinylDimethicone 5. Dimethicone 5 and mineral spirits from the CIR report. He noted that the necrosis observed was due to the mineral spirits, and not Dimethicone 5. The Panel voted unanimously in favor of issuing a Final Report with a safe as used conclusion on the Stearoxy Dimethicone 5 ingredient family. Dimethicone 5 has been used as a physical barrier method of eradicating head lice and eggs. 3,4 Dimethicone 5 use is also prevalent in condom lubricants5, and, it is used industrially in various construction sealants, rubber, and paints, and is taken orally as an anti-flatulence agent.6

Dimethicone 5 is one of the most common ingredients in cosmetics. It acts as an anti-foaming agent, skin protectant and skin & hair conditioner. It prevents water loss by forming a hydrating barrier on the skin. It is used in a wide range of cosmetics products including creams and lotions, bath soaps, shampoo and hair care products. The FDA approved Dimethicone 5 for personal care products, and it is generally considered to be safe to use.

Dimethicone 5 is classified as :

Antifoaming

Emollient

Skin conditioning

Skin protecting

CAS Number 63148-62-9 / 9006-65-9 / 9016-00-6

EINECS/ELINCS No: – / – / – /

COSING REF No: 33401

INN Name: dimeticone

PHARMACEUTICAL EUROPEAN NAME: dimeticonum

Chem/IUPAC Name: Polydimethylsiloxane

Products ( 1 034)Formulations (438)

1 034 Cosmetics Ingredients containing Dimethicone 5

Dimethicone 5

CAS number: 63148-62-9 / 9006-65-9 / 9016-00-6 – Dimethicone 5

“Not so good” in all categories.

Origin(s): Synthetic

Other languages: Dimethicon, Dimeticona, Dimeticone, Dimthicone ou Polydimthylsiloxane

INCI name: Dimethicone 5

Chemical name: Dimethicone 5

EINECS/ELINCS number: – / – / – /

Comedogenic potential (pc): 1

Food additive: E900

Classification: Silicone

NAMELYDimethicone 5 also called PDMS is a silicone that is not subject to any European restrictions. It is also the most used silicone in cosmetics. Its role is to produce a film of surface around the hair and on the skin, to protect them then (occlusive effect, with what that can imply). It also brings sweetness to the products and makes it easy to use creams and shampoos. It is a little “the Swiss knife of the chemist”: it is used a little in all sauces, to make the products brighter, more pleasant and therefore more sellers, or to compensate for the drying effect of certain ingredients like surfactants.

This inert component poses no problem for human health, one can only wonder if its effect is not only marketing and artificial. It is on the ecological aspect that the ingredient can have a very negative impact since it is very little biodegradable.

Its functions (INCI)

Antifoaming : Removes foam during manufacturing / reduces foam formation in liquid finished products

Emollient : Softens and softens the skin

Skin conditioning : Keeps the skin in good condition

Skin protecting : Helps to avoid the harmful effects of external factors on the skin

DMETKON 5

Dimethicone 5, 200, 350 & 1000 DMETKON 5 , 200 , 300 , 1000

Dimethicone 5 ( DMETKON 5 ) farkl viskoziteleri de olan, hafif silikon yalardr. (100cs, 200cs, 350cs, 1000cs)

Dimethicone 5 ( DMETKON 5 ), kiisel bakm rnlerinde kullanlan ou silikonlar gibi, cilt zerinde hidrofobik koruyucu bir film tabakas olumasn salar. Krem, losyon ve banyo rnlerinin kayganlamasn, cilt zerinde yaylmasn kolaylatrmak amacyla tercih edilir. Krem gibi rnlerin cilde ovalayarak yaylmas esnasnda oluabilecek sabunlama grnmn ve yapkanln azaltr, yalandrma ve yumuaklk salar.

Dimethicone 5 ( DMETKON 5 ) INCI Name: Dimethicone 5 ( DMETKON 5 )

Dimethicone 5 ( DMETKON 5 ) Dier isimleri: Polydimethylsiloxane, PDMS

Dimethicone 5 ( DMETKON 5 ) Grnm: Kristal berrak sv

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) Nedir?

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) Molekl Forml: (C2H6OSi)

Dimethicone 5 ( DMETKON 5 ) Molekl Arl: 5000-100000 arasndadr.

Dimethicone 5 ( DMETKON 5 ) Kimyasal Ad: Polidimetilsiloksan

Dimethicone 5 ( DMETKON 5 ) CAS Numaras: 9006-65-9

ki isim olarak anlmaktadr. Bunlardan bir tanesi Dimethicone 5 ( DMETKON 5 ) dieri ise Polidimetilsiloksandr. Silikon ya olarak tabir edilir. Silikon bazl polimerdir.

Dimethicone 5 ( DMETKON 5 ) Viskoelastik zelliklere sahip bir kimyasaldr. Bu sebeple insan cildi zerinde nemlendirici etkilere sahip olduu gzlemlenmitir.

Dimethicone 5 ( DMETKON 5 )lar en yaygn kullanlan elastomerler arasndadr.

Dimethicone 5 ( DMETKON 5 ) Dier simleri Aadaki Gibidir;

Dimethicone 5, Dimetikon 5, Polidimetilsiloksan, Polydimetylesiloxane, Dimetil Silikon, Metil Silikon, Silikon Ya, Emlsifiye Silikon Ya, Polimer, Silikon, Emlsifiyer, 9006-65-9, PDMS, Elastomer, Organik Silikon Ya

Dimethicone 5 ( DMETKON 5 ) Nasl retilir?

Dimethicone 5 ( DMETKON 5 ) Silikon yalarn retimi Oktametilsiklotetrasiloksan ve Heksametildisiloksan konsantre slfrik asit varlnda ve tetrametilamonyum hidroksit katalizr varlnda reaksiyona sokularak elde edilmektedir.

Dimethicone 5 ( DMETKON 5 ) Fiziksel ve Kimyasal zellikleri Nelerdir?

Dimethicone 5 ( DMETKON 5 ) Tad olmayan, renksiz, kokusuz ve toksik olmayan effaf formda viskoz bir svdr.

Dimethicone 5 ( DMETKON 5 ) Viskozitesi molekl arlna gre deimektedir. Bu bal olarak molekl arl arttka viskozitesi artmaktadr. Dimethicone 5 ( DMETKON 5 ) Kinematik viskozitesi 10-6 ila 10+6 arasnda deimektedir.

Dimethicone 5 ( DMETKON 5 ) znrlk olarak benzen ierisinde iyi znmektedir. Bunun yannda Toluen, Ksilen, etil eter, btanol ve etil alkol ierisinde ksmen znrle sahiptir. Aseton ierisinde az znr. Parafin ya ve bitkisel ya iinde znmemektedir. Buna benzer olarak su ierisinde znmemektedir.

Dimethicone 5 ( DMETKON 5 ) Kimyasal kararlla sahiptir.

Dimethicone 5 ( DMETKON 5 ) 25 C deki younluu 0.963 gr/cm3tr.

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) Erime noktas -50 C dir.

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) eitleri Nelerdir?

Dimethicone 5 ( DMETKON 5 ) Polidimetilsiloksan eitleri viskozitelerine gre deimektedir. Bunlar aadaki gibidir.

Dimethicone 5 1.5= Viskozite 1.5 mm2/s (Uucu Silikon)

Dimethicone 5 2= Viskozite 2 mm2/s (Uucu Silikon)

Dimethicone 5 3= Viskozite 3 mm2/s (Uucu Silikon)

Dimethicone 5 4= Viskozite 4 mm2/s (Uucu Silikon)

Dimethicone 5= Viskozite 5 mm/s (Uucu Silikon)

Dimethicone 5 10= Viskozite 10 mm2/s (Uucu Silikon)

Dimethicone 5 20= Viskozite 20 mm2/s (Uucu Silikon)

Dimethicone 50= Viskozite 50 mm2/s (Uucu Silikon)

Dimethicone 5= Viskozite 100 mm2/s (Uucu Silikon)

Dimethicone 5 200= Viskozite 200 mm2/s (Uucu Silikon)

Dimethicone 5 350= Viskozite 350 mm2/s) (Uucu Silikon)

Dimethicone 500= Viskozite 500 mm2/s (Uucu Silikon)

Dimethicone 50= Viskozite 1000 mm2/s (Uucu Silikon)

Dimethicone 5 12500= Viskozite 12500 mm2/s (Uucu Silikon)

Dimethicone 5 60000= Viskozite 60000 mm2/s (Uucu Silikon)

Dimethicone 5 ( DMETKON 5 ) Polidimetilsiloksan (PDMS)n Farmastik Uygulamalardaki Rol Nedir?

Bir Dimethicone 5 ( DMETKON 5 ) yasal olarak aktif bir ila snf olarak kabul edilebilmesi iin baz arlar vardr. Silikon ila sektrnde Nrofibromatozis (NF) dereceli olmaldr.

Bu tr PDMS Dimethicone 5 ( DMETKON 5 ) yksek hidrofobik zellii ve su ile karmayan baz etkilere sunabilecei ksmi koruma ile aktif OTC olarak kullanlr. Bu silikon polimerlerini ila ve kozmetik sektrnde ne karan zellikleri aadaki gibidir.

Dimethicone 5 ( DMETKON 5 ) sadece kayganlk zellikleri deil, ayn zamanda Dimethicone 5 ( DMETKON 5 ) kritik yzey slatma gerilimlerinden daha dk yzey gerilimine sahip olmas nedeniyle iyi yumuatc zellii vermesidir.

Dimethicone 5 ( DMETKON 5 ) dk molekl arlkl PDMS siklik oligomerleri akne ve sedef hastalna kar tedavi oluturmas amacyla krem formlasyonlarnda etki etmektedir.

Dimethicone 5 ( DMETKON 5 ) dk molekl arlkl dorusal PDMS Dimethicone 5 ( DMETKON 5 ) oligomerleri farkl iticiler yerine uucu bir tayc ve zc olarak ilev grmektedir.

Baz polidimetilsiloksanlarn kaynama noktas 100 C dir. Buna kyasla buharlama ss sudan daha dktr. Hidrofobik zellii vardr. Etil Alkol ile kartrlarak yaplan formlasyonlarda ciltte yanma hissi oluturmamas, bu tr PDMSnin susuz antifungal rahatszlklar iin bir bileen olarak kullanlmasn aklayc zellikleridir.

Yksek molekl arlkl Polidimetilsiloksanlar Dimethicone 5 ( DMETKON 5 ) vcuda nfuz ettikten sonra ykamaya kar direnlidir. UV emicilerin deniz suyu ile temas etmesi durumunda vcuttan kolay bir ekilde kmamasn salar. Bu sayede yzmeye dayankl Gne kremlerinin imalatna yardmc olmaktadr.

Yksek molekl arlkl polidimetilsiloksan Dimethicone 5 ( DMETKON 5 ) yksek dzeyde hidrofobik olabilir. Fakat neme ve gazlara kar olduka geirgendir. Bundan dolay uygulama alannda andrc etkisi yapar. Bu da istenmeyen zellikleridir. Bilim adamlar PDMS gibi silikonlarn ila ve kozmetik sektrndeki bu uygunsuzluklarn ortadan kaldrmak iin almalar yrtlmektedir.

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) Kullanm Alanlar Nerelerdir?

Dimethicone 5 ( DMETKON 5 ) kullanm alanlar arasnda en yaygn olan Kozmetik sektrdr. Bu alanda mkemmel hidrofobik nem direncine ve iyi k geirgenliine sahiptir. Ya zellikleri sayesinde ciltte bulunan ince izgileri doldurmas ve dzensiz cilt dokularna dolgu yapmas nedeniyle cilt bakm rnlerinin imalatnda youn bir ekilde kullanlmaktadr.

Makyaj malzemelerinin imalatnda, vcut losyonlarnn imalatnda, kozmetik sektrndeki nemlendiricilerin imalatnda, sa kremlerinin imalatnda kullanlmaktadr.

Dimethicone 5 ( DMETKON 5 ) ayn zamanda kiisel bakm rnlerinde yumuatc zellii vermesinden dolay da kullanlmaktadr.

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) doal silikon trevleri ciltteki nem kaybn nleyerek geirgen bir bariyer oluturmasn salayarak cilde przsz bir his vermektedir.

Dimethicone 5 ( DMETKON 5 ) bebeklerde kullanlan bezlerin bebek ciltlerinde oluturduu cilt tahrilerinin giderilmesi iin kullanlan rnlerin imalatnda kullanlmaktadr. Burada nemi artrrken kanmay ve tahrii azaltmaktadr.

Dimethicone 5 ( DMETKON 5 ) ampuanlarda, sa kremlerinde ve sa bakm rnlerinin imalatnda kullanlmaktadr.

Dimethicone 5 ( DMETKON 5 ) yzey aktif madde, kpk nleyici kimyasal olarak kullanlabilir.

Dimethicone 5 ( DMETKON 5 ) kk kanal kapatclarnn imalatnda Dimethicone 5 (Polidimetilsiloksan) kullanlmaktadr.

Dimethicone 5 ( DMETKON 5 ) fiyatlarna Etki Eden Faktrler Nelerdir?

Fiyat olarak, Dimethicone 5 ( DMETKON 5 ) kullanm alanlar ile doru orantldr. Dimethicone 5 ( DMETKON 5 ) kullanm alan arttka Polidimetilsiloksan fiyat olarak artacaktr.

Polidimetilsiloksan fiyatlar bu kimyasal maddenin retimine bal olarak deimektedir. retimi arttka Dimethicone 5 fiyat olarak decektir.

Dimethicone 5 ( DMETKON 5 ) (Polidimetilsiloksan) fiyatlar Dimethicone 5 (Polidimetilsiloksan) sat yapan firmalarn saysna ve stoklarna bal olarak deimektedir. Dimethicone 5 (Polidimetilsiloksan) fiyatlar Dimethicone 5 (Polidimetilsiloksan) stoklar arttka azalmaktadr.

Dimethicone 5 ( DMETKON 5 ) Yaps

Kimyasal forml PDMS Dimethicone 5 ( DMETKON 5 ) iin CH`dir 3 [Si (CH 3 ) 2 O] n- Si (CH 3 ) 3 , n- tekrar says , monomer [SiO (CH 3 ) 2 ] birimleri. [3] Endstriyel sentez dimetildiklorosilan ve sudan aadaki net reaksiyonla balayabilir :

{ displaystyle n { ce {Si (CH3) 2Cl2}} + (n + 1) { ce {H2O-> HO [-Si (CH3) 2O -] _ { mathit {n}} H}} + 2n { ce {HCl}}}{ displaystyle n { ce {Si (CH3) 2Cl2}} + (n + 1) { ce {H2O-> HO [-Si (CH3) 2O -] _ { mathit {n}} H}} + 2n { ce {HCl}}}

Polimerizasyon reaksiyonu hidroklorik asit gelitirir . Tbbi ve evsel uygulamalar iin silan ncsndeki klor atomlarnn asetat gruplar ile deitirildii bir proses gelitirilmitir . Bu durumda polimerizasyon, kimyasal olarak HCl`den daha az agresif olan asetik asit retir . Bir yan etki olarak, bu durumda krleme sreci de ok daha yavatr. Asetat, silikon kalafat ve yaptrclar gibi tketici uygulamalarnda kullanlr .

Dimethicone 5 ( DMETKON 5 ) Dallanma ve snrlama

Si hidrolizi, (CH 3 ) 2 Cl 2 ile biten bir polimer reten , silanol gruplar (-Si (CH 3 ) 2 , OH]). Bu reaktif merkezler tipik olarak trimetilsilil klorr ile reaksiyonla “kapatlr” :

2Si (CH 3 ) 3 CI + [Si (CH 3 ) 2 O] n -2 [Si (CH 3 ) 2 , OH] 2 → [Si (CH 3 ) 2 O] n -2 [Si (CH 3 ) 2 O Si (CH 3 ) 3 ] 2 + 2 HCl

Polimer zincirine dallar veya apraz balar eklemek iin daha fazla asit oluturan grup ve daha az metil grubu ieren silan ncleri, rnein metiltriklorosilan kullanlabilir . deal koullar altnda, byle bir bileiin her molekl bir dallanma noktas haline gelir. Bu, sert silikon reineleri retmek iin kullanlabilir . Benzer bir ekilde, molekler arl snrlamak iin metil grubuna sahip ncler kullanlabilir, nk bu tr molekllerin her biri yalnzca bir reaktif blgeye sahiptir ve bu nedenle bir siloksan zincirinin sonunu oluturur.

Dimethicone 5 ( DMETKON 5 ) Dk polidispersite indeksi ve yksek homojenlie sahip iyi tanmlanm PDMS, heksametilsiklotrisiloksann kontroll anyonik halka ama polimerizasyonu ile retilir . Bu metodolojiyi kullanarak, dorusal blok kopolimerleri, heteroarm yldz ekilli blok kopolimerleri ve dier birok makromolekler mimariyi sentezlemek mmkndr.

Polimer, ince bir dklebilir svdan ( n ok dk olduunda), kaln bir kauuksu yar katya ( n ok yksek olduunda) deien ok sayda viskozitede retilir . PDMS moleklleri , poliretanlara lastiklik kazandrmak iin kullanlan eter balarna benzer olan siloksan balar nedeniyle olduka esnek polimer omurgalarna (veya zincirlerine) sahiptir . Bu tr esnek zincirler, molekler arlk yksek olduunda gevek bir ekilde dolanr ve bu da PDMS`nin allmadk derecede yksek viskoelastisitesine neden olur .

Dimethicone 5 ( DMETKON 5 ) Mekanik zellikler

PDMS Dimethicone 5 ( DMETKON 5 ) viskoelastiktir , yani uzun ak srelerinde (veya yksek scaklklarda), bala benzer ekilde viskoz bir sv gibi davranr . Bununla birlikte, ksa ak srelerinde (veya dk scaklklarda), kauua benzer ekilde elastik bir kat gibi davranr . Viskoelastisite, kristalin olmayan polimerler arasnda yaygn olan bir dorusal olmayan esneklik biimidir. [4]PDMS iin bir stres-gerinim erisinin yklenmesi ve boaltlmas akmaz; daha ziyade, gerilim miktar, gerilim derecesine bal olarak deiecektir ve genel kural, artan gerilimin daha fazla sertlikle sonulanacadr. Ykn kendisi kaldrldnda, gerginlik yavaa geri kazanlr (aniden deil). Bu zamana bal elastik deformasyon, polimerin uzun zincirlerinden kaynaklanr. Ancak yukarda aklanan sre yalnzca apraz balant mevcut olduunda geerlidir; olmadnda, polimer PDMS, yk kaldrldnda bile orijinal durumuna geri dnemez ve kalc bir deformasyona neden olur. Bununla birlikte, kalc deformasyon PDMS`de Dimethicone 5 ( DMETKON 5 ) nadiren grlr, nk neredeyse her zaman bir apraz balama maddesi ile iyiletirilir.

Bir gece boyunca bir yzeyde baz PDMS Dimethicone 5 ( DMETKON 5 ) braklrsa (uzun ak sresi), yzeyi rtmek ve herhangi bir yzey kusuruna kflenmek iin akacaktr. Bununla birlikte, ayn PDMS kresel bir kalba dklrse ve sertlemesine izin verilirse (ksa ak sresi), lastik bir top gibi srayacaktr. [3] PDMS`nin mekanik zellikleri, bu polimerin ok eitli yzeylere uymasn salar. Bu zellikler eitli faktrlerden etkilendiinden, bu benzersiz polimerin ayarlanmas nispeten kolaydr. Bu, PDMS`nin eitli mikroakkan ve mikroelektromekanik sistemlere kolayca entegre edilebilen iyi bir substrat olmasn salar. [5] [6]Spesifik olarak, mekanik zelliklerin belirlenmesine PDMS krlenmeden nce karar verilebilir; krlenmemi versiyon, kullancnn arzu edilen bir elastomeri elde etmek iin saysz frsattan yararlanmasna izin verir. Genel olarak, PDMS`nin apraz bal krlenmi versiyonu, katlam formda kauua benzer. Kolayca gerildii, bklebildii, her yne sktrld yaygn olarak bilinmektedir. [7] Uygulamaya ve alana bal olarak, kullanc talep edilen zelliklere gre zellikleri ayarlayabilir.

PDMS`ye Dimethicone 5 ( DMETKON 5 ) gml yap. Bu teknik, bir kullancnn bir alt tabaka olarak ince bir PDMS Dimethicone 5 ( DMETKON 5 ) katmann tutmasna olanak salarken, takviye eklenerek daha yksek bir sertlik elde edilmesini salar.

Sylgard 184 PDMS`de Dimethicone 5 ( DMETKON 5 ) krleme scakl ve Young modl arasndaki dorusal iliki

Genel olarak PDMS Dimethicone 5 ( DMETKON 5 ), kolayca deforme olmasn salayan ve bir kauuun davranyla sonulanan dk bir elastik modle sahiptir. [8] [9] [10] PDMS`nin viskoelastik zellikleri, dinamik mekanik analiz kullanlarak daha hassas bir ekilde llebilir . Bu yntem, geni bir scaklk, ak hz ve deformasyon aralnda malzemenin ak zelliklerinin belirlenmesini gerektirir. PDMS`nin kimyasal kararll nedeniyle, genellikle bu tr deneyler iin bir kalibrasyon svs olarak kullanlr.

Kesme modl PDMS Dimethicone 5 ( DMETKON 5 ) hazrlama koullarna gre deiir, ve bunun sonucu olarak nemli lde 100 kPa ila 3 MPa arasnda deiir. Kayp tanjant ok dktr (tan δ 0.001) . [10]

Dimethicone 5 ( DMETKON 5 ) Kimyasal uyumluluk

PDMS hidrofobiktir . [6] Plazma oksidasyonu , yzeye silanol (SiOH) gruplar ekleyerek yzey kimyasn deitirmek iin kullanlabilir . Atmosferik hava plazmas ve argon plazmas bu uygulama iin alacaktr. Bu ilem, PDMS yzeyini hidrofilik hale getirerek suyun slatmasna izin verir. Oksitlenmi yzey, triklorosilanlar ile reaksiyona sokularak daha da ilevsel hale getirilebilir. Belirli bir sre sonra, evreleyen ortamn vakum, hava veya su olmasna baklmakszn, yzeyin hidrofobikliinin geri kazanlmas kanlmazdr; oksitlenmi yzey havada yaklak 30 dakika stabildir. [11]Alternatif olarak, uzun sreli hidrofilikliin bir gereklilik olduu uygulamalar iin, hidrofilik polimer alama, yzey nanoyap oluturma ve gml yzey aktif maddelerle dinamik yzey modifikasyonu gibi teknikler kullanlabilir. [12]

Dimethicone 5 ( DMETKON 5 ) Kat PDMS numuneleri (yzeyde oksitlenmi olsun veya olmasn) sulu zclerin malzemeye szmasna ve imesine izin vermeyecektir. Bylece PDMS yaplar, malzeme deformasyonu olmakszn su ve alkol zcler ile kombinasyon halinde kullanlabilir. Bununla birlikte en ok organik zcler olacak yaygn malzemeye ve bunun neden imeye. [6] Buna ramen, baz organik zcler, PDMS ile, rnein PDMS mikroakkan cihazlarnn kanallar iinde kullanlabilecek kadar yeterince kk imeye neden olur. ime oran, zcnn znrlk parametresi ile kabaca ters orantldr . Diizopropilamin, PDMS`yi byk lde iirir; kloroform , eter gibi zclerve THF malzemeyi byk lde iirir. Aseton , 1-propanol ve piridin gibi zcler , malzemeyi az miktarda iirir. Metanol , gliserol ve su gibi alkoller ve polar zcler , malzemeyi kayda deer ekilde iirmez. [13]

Dimethicone 5 ( DMETKON 5 ) Yzey aktif maddeler ve kpk nleyici maddeler

PDMS Dimethicone 5 ( DMETKON 5 ) yaygn bir yzey aktif maddedir ve kpk gidericilerin bir bileenidir . [14] Modifiye edilmi formdaki PDMS, herbisit nfuz edicisi olarak kullanlr [15] ve Rain-X gibi su itici kaplamalarda kritik bir bileendir . [16]

Dimethicone 5 ( DMETKON 5 ) Hidrolik svlar ve ilgili uygulamalar

Dimethicone 5 ( DMETKON 5 ) ayn zamanda otomotiv viskoz snrl kaymal diferansiyeller ve kaplinlerdeki aktif silikon svsdr. Bu genellikle bakm yaplamayan bir OEM bileenidir, ancak yeniden doldurma arlklar veya standart d basnlandrmalarn neden olduu etkinlikteki farkllklar nedeniyle kark performans sonularyla deitirilebilir. [ alnt gerekli ]

Dimethicone 5 ( DMETKON 5 ) Yumuak litografi

PDMS Dimethicone 5 ( DMETKON 5 ), yumuak litografi prosedrnde yaygn olarak bir damga reinesi olarak kullanlr , bu da onu mikroakkan iplerde ak iletimi iin kullanlan en yaygn malzemelerden biri yapar . [17] Yumuak litografi sreci, sadece birka nanometre boyutundaki desenlerin cam, silikon veya polimer yzeylere aktarlmasn salayan elastik bir damga oluturmay ierir. Bu tr bir teknik ile optik telekomnikasyon veya biyomedikal aratrma alanlarnda kullanlabilecek cihazlar retmek mmkndr. Damga, normal fotolitografi veya elektron n litografi tekniklerinden retilir . znrlk, kullanlan maskeye baldr ve 6 nm`ye ulaabilir. [18]

inde mikro elektro mekanik biyomedikal (veya biyolojik) sistemleri (biyo-MEMS), yumuak litografi hem organik hem de inorganik balamlarda mikro-akkan iin yaygn olarak kullanlr. Kanallar tasarlamak iin silikon gofretler kullanlr ve PDMS daha sonra bu gofretlerin zerine dklr ve sertlemeye braklr. Kaldrldnda, en kk ayrntlar bile PDMS`de basl olarak braklr. Bu zel PDMS blou ile hidrofilik yzey modifikasyonu, plazma andrma kullanlarak gerekletirilir.teknikleri. Plazma ilemi yzey silikon-oksijen balarn bozar ve plazma ile ilenmi bir cam slayt genellikle PDMS`nin aktif tarafna yerletirilir (plazma ile ilenmi, imdi basklarla hidrofilik taraf). Aktivasyon yprandnda ve balar yeniden olumaya baladnda, camn yzey atomlar ile PDMS`nin yzey atomlar arasnda silikon-oksijen balar oluur ve slayt PDMS`ye kalc olarak szdrmaz hale gelir, bylece su geirmez bir kanal oluturur. Bu cihazlarla aratrmaclar, hzl paralel testler iin benzersiz bir ip zerinde laboratuar cihazlar oluturarak farkl ilevler iin eitli yzey kimyas tekniklerini kullanabilir. [5] PDMS, alara apraz balanabilir ve polimer alarn esnekliini incelemek iin yaygn olarak kullanlan bir sistemdir. [ alnt gerekli] PDMS, yzey arjl litografi ile dorudan desenlenebilir. [19]

PDMS Dimethicone 5 ( DMETKON 5 ), bugne kadar sadece laboratuar test miktarlarnda sentetik geko yapmal kuru yapkan malzemelerin yapmnda kullanlmaktadr . [20]

Baz esnek elektronik aratrmaclar, dk maliyeti, kolay retimi, esneklii ve optik effafl nedeniyle PDMS kullanr. [21]

Dimethicone 5 ( DMETKON 5 ) Stereo litografi

Stereo litografi (SLA) 3B baskda k, seici olarak sertletirmek iin kla sertleen reineye yanstlr. Baz SLA yazc trleri, reine tanknn tabanndan sertletirilir ve bu nedenle, her bir baskl tabakann taze bir krlenmemi reine filmi ile tedarik edilmesi iin byyen modelin tabandan soyulmasn gerektirir. Tankn altndaki bir PDMS katman, oksijeni emerek bu ileme yardmc olur: reineye bitiik oksijenin varl, PDMS`ye yapmasn nler ve optik olarak berrak PDMS, yanstlan grntnn bozulmadan reineye gemesine izin verir.

Dimethicone 5 ( DMETKON 5 ) Tp ve kozmetik

Aktif Dimethicone 5 ( DMETKON 5 ), polidimetilsiloksanlar ve bir karm, silisyum dioksit (bazen simetikon ), genellikle kullanlan reetesiz ilalar bir ekilde kpk nleyici madde ve gaz giderici . [22] [23] En azndan kontakt lenslerde kullanlmas nerilmitir. [24]

Silikon gs implantlar , zerine fme amorf silikann eklendii bir PDMS elastomer kabuktan yaplr, PDMS jeli veya salin solsyonu bulunur . [25]

Ek olarak PDMS Dimethicone 5 ( DMETKON 5 ) , bcekleri yakalama kabiliyeti nedeniyle bit veya pire tedavisi olarak faydaldr. [26] Ayn zamanda tipik yalardan daha hafif ve nefes alabilen bir nemlendirici olarak da alr.

Dimethicone 5 ( DMETKON 5 ) Cilt

PDMS Dimethicone 5 ( DMETKON 5 ) , kozmetik ve tketici rnleri endstrisinde de eitli ekillerde kullanlmaktadr. rnein PDMS , kafa derisindeki ba bitlerinin tedavisinde kullanlabilir [26] ve Dimetikon 5, amac “cilt korumas” olan aktif bir bileen olarak listelendii cilt nemlendirici losyonlarda yaygn olarak kullanlmaktadr. Baz kozmetik formlasyonlar, Dimetikon 5 ve ilgili siloksan polimerlerini% 15`e kadar kullanm konsantrasyonlarnda kullanr. Kozmetik erikleri `in (CIR) Uzman Paneli, Dimetikon 5 ve ilgili polimerler olduu sonucuna `kozmetik formlasyonlarda kullanlan gvenli`. [27]

Dimethicone 5 ( DMETKON 5 ) Sa

AmoDimetikon 5 gibi PDMS Dimethicone 5 ( DMETKON 5 ) bileikleri, kk partikllerden oluacak ve suda veya alkolde znebilecek / yzey aktif maddeler olarak ilev grecek ekilde formle edildiinde etkili yumuatclardr [28] [29] (zellikle hasar grm salar iin [30] ) ve daha da iyiletirici. yaygn Dimetikon 5 ve / veya Dimetikon 5 kopoliollerden daha sa. [31]

Evcil hayvanlar iin pire tedavisi

Dimethicone 5 ( DMETKON 5 ), kk bir tek kullanmlk doz tek kullanmlk pipetten bir kedi veya kpein boynunun arkasna uygulanan bir svdaki aktif bileendir. Parazit madde iinde hapsolup hareketsiz hale gelir ve bylelikle bcein yaam dngsn bozar.

Gdalar

PDMS Dimethicone 5 ( DMETKON 5 ), piirme ilemi srasnda yan sramasn nlemek iin birok piirme yana (kpk nleyici madde olarak) eklenir. Bunun bir sonucu olarak PDMS, McDonald`s Chicken McNuggets , patates kzartmas, kzarm patates, milkshake ve smoothie [32] ve Wendy`s patates kzartmas gibi birok fast food rnnde eser miktarlarda bulunabilir . [33]

Avrupa gda katk maddeleri ynetmeliine gre E900 olarak listelenmitir .

Prezervatif kayganlatrc

PDMS Dimethicone 5 ( DMETKON 5 ) , prezervatif kayganlatrc olarak yaygn olarak kullanlmaktadr . [34] [35]

Yurtii ve ni kullanmlar

Birok kii PDMS`ye Dimethicone 5 ( DMETKON 5 ) dolayl olarak ainadr nk Silly Putty`de PDMS`nin karakteristik viskoelastik zelliklerini kazandrd nemli bir bileendir . [36] Kullanlan bir dier oyuncak PDMS ise Kinetic Sand . Lastikimsi, salkm kokulu silikon dolgular, yaptrclar ve akvaryum dolgu macunlar da iyi bilinmektedir. PDMS ayrca silikon gresi ve dier silikon bazl yalayclarn yan sra kpk giderici maddeler , kalp ayrc maddeler , nemlendirme svlar, s transfer svlar, cilalar, kozmetikler , sa kremleri ve dier uygulamalarda bir bileen olarak kullanlr . PDMS ayrca bir dolgu svs olarak kullanlmtr.gs implantlar .

Gdann st yzeyinin analizi ( znm gaz analizi ) iin sorbent olarak kullanlabilir . [37]

Gvenlik ve evresel hususlar

Gre Ullmann`n Encyclopedia , hibir “bir ortamda organizmalar zerinde iaretlenmi zararl etkileri” siloksanlar iin gndeme gelmitir. PDMS Dimethicone 5 ( DMETKON 5 ) biyolojik olarak paralanmaz, ancak atk su artma tesislerinde emilir. Bozulmas eitli killer tarafndan katalize edilir . [38]

Polydimethylsiloxane veya PDMS olarak da bilinen Dimethicone 5 teknik olarak silikon bazl polimerlerdir. (Bunlara deiik isimlerle de rastlayabiliriz: Methicone, Phenyl trimethicone, Cyclomethicone, Dimethicone 5 copolyol).Bahsettiiniz tm isimler silikon snfndan. Kistik sivilcelere sebep Dimethicone 5 olmayabilir. Kesin “budur” denilemez. Bunun hakknda kantlanm hi bir veri yoktur. Cyclomethicone veya Dimethicone 5 kalnlna gre gzenei rtebilir evet, ama uucudur ve bunun da 100`lk , 1000`lik gibi younluklar var. Dimethicone 5 ampuan ve benzeri sa rnleri ieriklerinde kullanlan bir karmdr. Karm silikon esasl polimer bir karmdr. Kozmetik rnler organik olmad iin youn kullanm bata cilt olmak zere kullanld yer ve miktar olarak banza baz sorunlar aabilir. Dimethicone 5 ierdii silikonlar itibari ile salar daha parlak ve dolgun gsterme amal olarak bu rnlere eklenir ve youn kullanm salarda yalanma gibi byk problemlerin balangc olan bir durumu ortaya karr.

Birok zelliklerinden dolay, Dimetikon 5(Dimethicone 5), cilt bakm rnlerinde de kullanlyor ve cildin zerinde rnlerin kaymasn salyor.Bitlerin satan komple giderilmesinde en etkili ilalar (sv silikon) Dimetikon 5(Dimethicone 5)ludur.Sa biti tedavisinde kullanlan 3 grup ila bulunmaktadr. Bunlardan bitkisel olan zaman ve para kaybndan baka ie yaramad iin herhangi bir bilimsel yn yoktur. Bir dieri zehir ierenler de tehlikeli olduklarndan ve bit tarafndan giderek daha etkisiz hale getirildii iin hzla terk edilmektedir. nc ve en etkilisi ise tm kullanclarda % 100 baar salayan Dimetikon 5 (Dimethicone 5) ieren ilalar yaygnlamaktadr.Buharlamayan silikon yapsnda bir maddedir, Dimetikon 5(Dimethicone 5) ieren ilalar hazrlanrken % 4 aktif madde % 96 siklometikon ierecek ekilde olmasna dikkat edilir. En etkili formln bu olduu bilimsel almalarla kantlanmtr. Siklometikon hzl buharlaan bir maddedir.Dimetikon 5(Dimethicone 5) nasl etkiler? Sa karmla slatldnda bitler, yavrular ve yumurtalar da slatlm yani etraf bu svyla kaplanm olur. Siklometikon oda ssnda hzla buharlar ve geride Dimetikon 5(Dimethicone 5) kalr. Dimetikon 5(Dimethicone 5) Hangi Bit Trlerinde Etkili Olur? Dimetikon 5(Dimethicone 5) ieren ilalarn asl kullanm yeri Sa Biti (Pedikulozis Kapitis) olup, ancak kask biti iin de kullanlabilir. Vcut yada elbisede grlen bitlerin tedavisi iin kullanlmaz.Dimetikon 5(Dimethicone 5) yan etkileri Bilinen yan etkisi yoktur.Dimetikon 5(Dimethicone 5), buharlamayan ve silikona benzer bir maddedir. Dimetikon 5(Dimethicone 5) maddesini iermekte olan bit ilalarnn hazrlanmas srasnda %4 aktif madde, %96 ise siklometikon kullanlmaldr. Etki ve baar gsteren en ideal forml budur ve bilimsel olarak kantlanmtr. Dimetikon 5(Dimethicone 5) buharlamayan, siklometikon ise hzla buharlaan bir maddedir.Etken maddesi Dimetikon 5(Dimethicone 5) olan Hedrin Sa Biti Solsyonu, ba biti ve bit yumurtalarn ldren bir solsyondur.