Silicone‐polyacrylate chemical compatibilization with organosilanes

Abstract

Silicone‐polyacrylate polymer blends were prepared using methacryloxy‐propyl‐trimethoxysilane (MAPTMS) as a compatibilizing agent (chemical linker). Energy dispersive X‐ray spectroscopy elemental mapping showed silicon and carbon rich regions corresponding to poly(dimethyl‐siloxane) (PDMS) and poly(methyl methacrylate) PMMA domains. Infrared spectroscopy confirmed that covalent bonds are formed between PMMA and the organosilane, MAPTMS. The organosilane addition decreased the water‐to‐blend contact angles and tended to increase the modulus of elasticity and tensile strength of the resulting PDMS‐PMMA blends. Cytotoxicity was not detectable for any samples. Silicone‐based materials are currently used as prosthetic materials to replace damaged tissues; the methodology described here can be readily adapted to this application with improved performance. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers

Microwave‐assisted processing of silicone/PMMA blends for maxillofacial prostheses

“…The reaction is catalyzed by platinum and proceeds at room temperature. [ 19 ] Blends were prepared as described in a preceding paper [ 18 ] by adding 25.0% (wt/wt) PMMA. The MAPTMS amount is 5.0% (wt/wt) in relation to PDMS.…”

“…The blends also did not show any cytotoxicity. [18] In this study, the chemical compatibilization was combined with microwave irradiation to fabricate silicone/PMMA blends. A detailed investigation about the distribution of each component within the samples was carried out using confocal Raman microscopy (CRM) and scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS) comparing with samples processed at room temperature.…”

Synthesis and properties of triblock copolymers containing PDMS via AGET ATRP

“…As expected, PMMA increased the wettability of PDMS and the water contact angles toward the air-side surface of the copolymer films decreased gradually with the increasing of PMMA block content. It was interested in using these materials as biocompatible materials, since PDMS was a hydrophobic material, and it would be desirable to lower the contact angle to obtain a material that can be better accommodated to the biocompatible materials [26]. Surface energies of the copolymers were indirectly obtained from static water contact angles.…”

Synthesis and characterization of novel fluorosilicone rubber using imide modified vinyl‐containing fluorosilicone resin as cross‐linker

“…However, like all silicone rubbers, fluorosilcone rubber also has the drawbacks of relatively low mechanical strength, which limits its practical application . To overcome this problem, considerable efforts have been done, mainly including adding reinforcement filler, blending with other high‐strength polymer, using different crosslinking agent or crosslinking system . Given the effective improvement of mechanical strength, the choice of a novel crosslinking agent or crosslinking system has attracted more and more attentions in recent years.…”