Creating Functional Materials by Chemical and Physical Functionalization of Silicone Elastomer Networks

Toward the Development of a Versatile Functionalized Silicone Coating

“…59,49,58 Briefly, the precursor monomer was obtained by slow hydrolysis of methylvinyldichlorosilane in the presence of dilute aqueous HCl solution. The reaction products comprised various vinylmethyl siloxane cycles (VD3, VD4 and VD5) and linear hydroxylterminated chains.…”

“…Poly(vinylmethylsiloxane) was synthesized using stepgrowth polymerization of short hydroxyl-terminated oligomeric vinyl methyl siloxane chains, as reported previously. 49,58,59 Briefly, the precursor monomer was obtained by slow hydrolysis of methylvinyldichlorosilane in the presence of dilute aqueous HCl solution. The reaction products comprised various vinylmethyl siloxane cycles (VD3, VD4 and VD5) and linear hydroxyl-terminated chains.…”

“…54,55,56,57 Replacing a methyl group on PDMS with a vinyl group yields poly(vinylmethylsiloxane) (PVMS), which is much more chemically tailorable than PDMS. 58 While the properties of PVMS are generally similar to those of PDMS, 49 the added vinyl groups afford access to alternative chemical modification pathways. For instance, Efimenko et al have demonstrated that the UVO treatment time needed to make the surface of PVMS hydrophilic is considerably shorter (ranging from seconds to a few minutes) than that of PDMS due to the higher susceptibility of vinyl groups.…”

“…Replacing a methyl group on PDMS with a vinyl group yields poly­(vinylmethylsiloxane) (PVMS), which is much more chemically tailorable than PDMS . While the properties of PVMS are generally similar to those of PDMS, the added vinyl groups afford access to alternative chemical modification pathways.…”

Multipurpose Polymeric Coating for Functionalizing Inert Polymer Surfaces

“…Here, we demonstrate the benefit of this capability by introducing initiator molecules that are subsequently used to grow functional polymers via surface-initiated polymerization. Alternatively, the polysiloxane coating can itself be modified by UVO treatment without compromising dramatically its integrity and topography because it is converted into a silica-like layer that can serve as a basis for tethering small-molecule functional modifiers, such as organosilanes. We perform this modification for illustrative purposes to establish that fluorinated organosilanes, often used to promote scratch resistance and hydrophobicity, can be chemically grafted to a UVO-treated polysiloxane coating.…”