Part 1 : Soap-Free Emulsion Copolymerization of Styrene with COPS-I

Abstract

Monodisperse poly[styrene-co-(COPS-I)] latices in the size range of 165∼550nm were successfully prepared by soap-free emulsion polymerization with various polymerization conditions (Styrene, COPS-I, KPS, DVB concentrations and polymerization temperature). In general, the COPS-I and KPS, DVB concentrations and polymerization temperature were closely related to the polymerization rate and the number of particles, molecular weight, and zeta potential. The polymerization rate and zeta potential increased, but molecular weight decreased, with increasing in the number of particles.