Polydimethylsiloxane, called PDMS or dimethicone, is a polymer widely used for the fabrication and prototyping of microfluidic chips. It is a mineral-organic polymer (a structure containing carbon and silicon) of the siloxane family (word derived from silicon, oxygen and alkane).
Is PDMS an epoxy?
Both materials are commonly used for microfluidic prototyping. Epoxy resins are often applied when rigid channels are required, that will not deform if exposed to high pressure. PDMS, on the other hand, is a flexible material, which allows integration of membrane valves on the chip.6 Mar 2014
Is PDMS a synthetic polymer?
Poly(dimethylsiloxane) (PDMS) is another biostable synthetic polymer used for biomedical applications such as drug delivery vehicles and blood-contacting biomaterials (Figure 18.1e).
Is PDMS A hydrogel?
Poly(ethylene glycol) (PEG)/polydimethylsiloxane (PDMS) hydrogels were synthesized by cross-linking norbornene end-functionalized polymers with a tetrafunctional thiol using thiol–norbornene chemistry.Poly(ethylene glycol) (PEG)/polydimethylsiloxane (PDMS) hydrogels were synthesized by cross-linking norbornene end-functionalized polymers with a tetrafunctional thiol using thiol–norbornene chemistry.20 Jul 2012
What type of polymer is PDMS?
Polydimethylsiloxane (PDMS) is the simplest member of the silicone polymer family. It is formed by hydrolyzing Me2SiCl2, which is produced from high-purity SiO2 and CH2Cl2 by the Muller–Rochow reaction. The term “silicone” was coined by chemist F. S. Kipping in 1901.14 Apr 2014
Is PDMS a rubber?
Polydimethylsiloxane (PDMS) is a commercially available physically and chemically stable silicone rubber. It has a unique flexibility with a shear elastic modulus due to one of the lowest glass transition temperatures of any polymer .
Is PDMS a silane?
PDMS is optically clear and, in general, inert, non-toxic, and non-flammable. It is one of several types of silicone oil (polymerized siloxane).
Is PDMS safe to eat?
Is Dimethylpolysiloxane Safe to Eat? Yes, its safety when used as a food additive has been approved by the U.S. Food and Drug Administration (FDA), European Food Safety Authority (EFSA), Joint FAO/WHO Expert Committee on Food Additives (JECFA), as well as other authorities.28 Dec 2019
Is polydimethylsiloxane carcinogenic?
Results from implantation studies have been variable, with a number of studies supporting the conclusion that PDMS is not carcinogenic.
Is PDMS organic?
PDMS is the most widely used silicon-based organic polymer, as its versatility and properties lead to many applications.
Is PDMS a thermoset?
7−11 Even though thermosetting polymers such as PDMS and polyurethane have been proven to be useful materials for microstructured adhesives, they have limitations such as long processing times due to their curing reactions, frequent requirement of vacuum for degassing the prepolymers, and relatively high base material 8 Apr 2014
Does silicone stick to PDMS?
PDMS can be successfully bonded to glass, silicon, and itself using a standard oxygen plasma in a reactive ion etcher (RIE). PDMS is quite hydrophobic with an overall non-reactive surface, making it difficult for it to bond with other surfaces.
Why is PDMS used in microfluidics?
PDMS in microfluidics PDMS is one of the most employed materials to mold microfluidic devices. (1) The molding step allows mass-production of microfluidic chips from a mold. (2) A mixture of PDMS (liquid) and crosslinking agent (to cure it) is poured into the mold and heated at high temperature.