Synthesis and properties of SiO2/P(MMA-BA) core-shell structural latex with siloxanes

In this study, we have successfully introduced siloxane monomer, 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane (V4) into the shell of silica/poly(methyl methacrylate-butyl acrylate) (SiO2/P(MMA-BA)) core-shell nanocomposite colloids via in-situ emulsion copolymerization. The obtained nanocomposite films with 50% silica content all show excellent transparency (nearly 100% transmittance in visible range) and film-forming property (Tg under 30 °C). More importantly, the addition of V4 can significantly increase the weathering durability of the film by improving the water repellency, cross-linking degree and UV-blocking property of the film.