Chain Transfer of Telogens with Styrene in Bulk and Emulsion Systems

Abstract

The chair, transfer constants for selected telogens were determined with styrene in both bulk and emulsion polymerization systems. Since the locus of chain transfer. like polymerization, is primarily in the micelles or polymer particles, the chain transfer constants of water-insoluble telogens were similar in both systems. However, these values were different for water-soluble telogens and the difference was greatest for the most soluble telogens. The ratio of the chain transfer constants in bulk and emulsion systems is apparently related to the solubility parameters of telogens in a homologous series.