Theory of emulsion copolymerization kinetics

Abstract

Abstract An extended Smith–Ewart theory is presented which provides a description for kinetic properties of an emulsion copolymerization system during intevals II and III (i.e., after completion of latex particle formation). Differential equations are derived specifying the time evolution of the copolymer compositions and of the copolymer sequence distributions in terms of the rate coefficients for free radical entry, exit, homopropagation, cross propagation, cross transfer, and cross termination. Solutions to these equations show how an emulsion copolymer system may be designed to give formed polymer with desired composition and/or sequence distribution functions.