Synthesis and Properties of Nano-SiO₂/Polysiloxane Modified Polyacrylate Emulsifier-Free Emulsion

Abstract

Abstract Nano-SiO2/polysiloxane modified polyacrylate emulsifier-free emulsion was synthesized by emulsion polymerization using surfmer and the sol-gel process. The cocondensation of trimethoxysilyl groups of the polyacrylate polymer and TEOS formed a cross-linking network film, in which the nanometer-size silica particles were dispersed homogeneously in the acrylic polymer component. The hybrid films were transparent, solvent-resistant, good thermal stability and mechanical properties. Keywords: Emulsion polymerizationNano-silicaPolyacrylatePolysiloxaneSurfmer ACKNOWLEDGMENT This work is supported by Natural Science Foundation of Shaanxi Province (No. 2007E110), Scientific Innovation Fund of Shaanxi University of Science and Technology (No. TD09-03), National High Technology Research and Development Program of China (863 Program) (No. 2008AA 03Z311), Graduate Innovation Fund of Shaanxi University of Science and Technology, and Science and technology plan of Wenzhou city (No. H20080012).