Abstract

Styrene/ethyl methacrylate (SEMA) colloids were obtained by cocondensation at 77 K of the monomers with several metals such as Au, Pd, In and Sn. The colloids were poly- merized with 2,2'-azoisobutyronitrile and dibenzoyl peroxide as radical initiators at 60 "C for 3.5 h. A viscosity average molecular weight (lo4< mv< lo5)was obtained depending upon the metal used,The particle size of these clusters dispersed in the copolymers ranges from 20 to 31 A. The metal clusters are incorporated in the copolymers.