Synthesis of hybrid core-shell nanoparticles by emulsion (co)polymerization of styrene and gamma-methacryloxy propyl trimethoxy silane : Kinetics and modeling
Résumé
Core-shell nanoparticles with a polystyrene core and a hybrid copolymer shell are synthesized via emulsion polymerization of styrene and subsequent addition of Γ- methacryloxy propyl trimethoxy silane (MPS) to produce the shell by copolymerization reaction of MPS with the residual amount of styrene. The kinetics of copolymerization and hydrolysis-condensation reaction are studied by gas chromatography (GC) and solid-state 29Si NMR along with the emulsion copolymerization process. A complete model of the reaction mechanisms is developed and the results are compared with the experimental data.