The reversible addition-fragmentation chain transfer(RAFT) miniemulsion polymerization of vinyl acetate mediated by xanthate  

作　　者：Bo Jiang Qing Hua Zhang Xiao Li Zhan Feng Qiu Chen 

机构地区：[1]Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China

出　　处：《Chinese Chemical Letters》2009年第6期733-737,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.20836007)

摘　　要：The reversible addition-fragmentation chain transfer （RAFT） miniemulsion polymerization of vinyl acetate （VAc） mediated by methyl （methoxycarbonothioyl） sulfanyl acetate （MMSA） was carried out. The results showed that polymerizations initiated by AIBN and KPS proceeded in a controlled way. The RAFT miniemulsion polymerization of VAc initiated by KPS showed the shorter inhibition period, higher propagation rate coefficient and final conversion than those in experiment initiated by AIBN. When the monomer conversion reached 25%, the polydispersity index （PDI） of polymer became broad, which was related to chain transfer reaction in RAFT miniemulsion of VAc.The reversible addition-fragmentation chain transfer （RAFT） miniemulsion polymerization of vinyl acetate （VAc） mediated by methyl （methoxycarbonothioyl） sulfanyl acetate （MMSA） was carried out. The results showed that polymerizations initiated by AIBN and KPS proceeded in a controlled way. The RAFT miniemulsion polymerization of VAc initiated by KPS showed the shorter inhibition period, higher propagation rate coefficient and final conversion than those in experiment initiated by AIBN. When the monomer conversion reached 25%, the polydispersity index （PDI） of polymer became broad, which was related to chain transfer reaction in RAFT miniemulsion of VAc.

关 键 词：Xinyl acetate XANTHATE Reversible addition-fragmentation chain transfer MINIEMULSION 

分 类 号：O632.52[理学—高分子化学] TQ316.334[理学—化学]