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Polydimethylsiloxane (PDMS), also known as dimethylpolysiloxane or dimethicone, is a silicone polymer with a wide variety of uses, from cosmetics to industrial lubrication and passive daytime radiative cooling. [1] [2] [3] PDMS is particularly known for its unusual rheological (or flow) properties.
PDMS stamps are pieces of polydimethylsiloxane (PDMS), a silicone, that have been patterned usually against a master mold to form a relief pattern used in soft lithography. This PDMS stamp can be used in either its current form as a relief surface for techniques such as microcontact printing or can also be attached to an external source by ...
The siloxane functional group forms the backbone of silicones [−R 2 Si−O−SiR 2 −] n, the premier example of which is polydimethylsiloxane (PDMS). [2] The functional group R 3 SiO− (where the three Rs may be different) is called siloxy.
Microcontact printing (or μCP) is a form of soft lithography that uses the relief patterns on a master polydimethylsiloxane (PDMS) stamp or Urethane rubber micro stamp [1] to form patterns of self-assembled monolayers (SAMs) of ink on the surface of a substrate through conformal contact as in the case of nanotransfer printing (nTP). [2]
n MeSiHCl 2 + n H 2 O → [MeSiHO] n + 2n HCl. The related polymer polydimethylsiloxane (PDMS) is made similarly, but lacking Si−H bonds, it exhibits no reducing properties. Dimethyldichlorosilane CAS#: 75-78-5 is then used instead of monomethyldichlorosilane CAS#: 75-54-7.
Each Si center has two substituents, usually methyl or phenyl. Examples include polydimethylsiloxane (PDMS, [Me 2 SiO] n), polymethylhydrosiloxane (PMHS, [MeSi(H)O] n) and polydiphenylsiloxane [Ph 2 SiO] n). [5] Related to the siloxanes are the polysilazanes. These materials have the backbone formula −Si−N−Si−N−. One example is ...
Polydimethylsiloxane (PDMS) is a typical release agent. A release agent (also mold release agent, release coating, or mold release coating) is a chemical used to prevent other materials from bonding to surfaces. Release agents aid in processes involving mold release, die-cast release, plastic release, adhesive release, and tire and web release. [1]
Polydimethylsiloxane (PDMS) is the principal component of silicones. Organosilicon chemistry is the study of organometallic compounds containing carbon–silicon bonds, to which they are called organosilicon compounds. Most organosilicon compounds are similar to the ordinary organic compounds, being colourless, flammable, hydrophobic, and ...