G. Cardenas et al., INVESTIGATION OF METAL-CLUSTERS DISPERSED IN STYRENE-CO(ETHYL METHACRYLATE) COPOLYMERS BY MEANS OF HIGH-RESOLUTION TRANSMISSION ELECTRON-MICROSCOPY, Macromolecular rapid communications, 17(11), 1996, pp. 775-780
Styrene/ethyl methacrylate (SEMA) colloids were obtained by cocondensa
tion at 77 K of the monomers with several metals such as Au, Pd, In an
d Sn. The colloids were polymerized with 2,2'-azoisobutyronitrile and
dibenzoyl peroxide as radical initiators at 60 degrees C for 3.5 h. A
viscosity average molecular weight (10(4) < M(v) < 10(5)) was obtained
depending upon the metal used,The particle size of these clusters dis
persed in the copolymers ranges from 20 to 31 Angstrom. The metal clus
ters are incorporated in the copolymers.