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    Silicone-polyacrylate chemical compatibilization with organosilanes

    Year: 2010

    Journal: Polymer Engineering & Science, Volume 50, Issue 3, pages 606–612, March 2010, 20111221

    Authors: Débora S.C. dos Anjos1, Eliane C.V. Revoredo2, André Galembeck1,3,*

    Organizations: 1 Departamento de Química Fundamental, CCEN, Universidade Federal de Pernambuco. Av. Prof Luiz Freire, s/n, Cidade Universitária, Recife - PE, CEP 50670-901, Brazil 2 Centro de Reabilitac¸ a˜ o Buco-Maxilo-Facial, Hospital do Caˆ ncer de Pernambuco, Av. Cruz Cabugá, 1597, Santo Amaro, Recife - PE, CEP 50040-000, Brazil 3 Centro de Tecnologias Estratégicas do Nordeste - CETENE, Av. Prof Luiz Freire, 01, Cidade Universitária, Recife - PE, CEP 50670-901, Brazil

    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.