Influence of reaction between second monomer and vinyl group of seed polysiloxane on seeded emulsion polymerization

Seeded emulsion polymerization of methyl methacrylate (MMA) or styrene (ST) was carried in the presence of different vinyl-containing polysiloxane latices (SV-*) and the core-shell particles with poly(methyl methacrylate) (PMMA) or polystyrene (PST), as the shells were obtained under different polymerization conditions. Besides the compatibility of the vinyl monomer and its polymer with polysiloxane and the reaction between vinyl monomer with vinyl group of polysiloxane, the content of vinyl group of seed polysiloxane has influence on the morphology and component of the resulted composite particles. The mechanism for the formation of core-shell structure is discussed. (C) 2001 John Wiley & Sons, Inc.