文献类型：期刊文献

英文题名：Synthesis of block copolymers by emulsion "living/controlled" radical polymerization of vinyl monomers in sequence.

作者：Wan, Xiaolong[1]; Ying, Shengkang[1]

机构：[1]E China Univ Sci & Technol, Lab Living Polymerizat, Shanghai 200237, Peoples R China

年份：1999

卷号：218

期号：2

起止页码：U514

外文期刊名：ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：1999424778193);WOS:【SCI-EXPANDED(收录号:WOS:000082034001547)】；

语种：英文

外文关键词：Differential scanning calorimetry - Free radical polymerization - Glass transition - Infrared spectroscopy - Monomers - Nuclear magnetic resonance spectroscopy - Polyacrylates - Polymethyl methacrylates - Polystyrenes - Purification - Synthesis (chemical) - Terpolymers

摘要：Block copolymers, poly(methyl methylacrylate-b-styrene-b-methyl methylacrylate), poly(butyl acrylate-b-methyl methylacrylate), poly(styrene-b-butyl acrylate-b-styrene) and poly(butyl acrylate-b-styrene), are synthesized by emulsion `living/controlled' radical polymerization of vinyl monomers in sequence. H NMR and IR spectra of these copolymers are in good agreement with their structures. Differential scanning calorimetry analytical results show separate glass transition temperature corresponding to transition of each homopolymer and characteristic of microphase separated copolymers in BA/St di- and tri-block segments.