Synthesis and performance of miktoarm star copolymers of styrene and butadiene  

作　　者：张海燕 可勇 姚明 赵素合 张兴英 

机构地区：[1]College of Materials Science and Engineering Beijing University of Chemical Technology [2]Research Institute of Highway Ministry of Transport [3]The Thirty Three Research Institute of China Electronics Technology Group Corporation

出　　处：《Journal of Beijing Institute of Technology》2011年第2期280-284,共5页北京理工大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(50573005)

摘　　要：A novel multifunctional macromolecular organolithium initiator （PD-Sn-（RLi）3） was prepared via living anionic polymerization and used for the synthesis of miktoarm star copolymers in cyclohexane. The average molecular weight, polydispersity index, microstructure and unit composition of the miktoarm star copolymers were characterized with GPC and 1H-NMR. Performances of the miktoarm star styrene-butadiene rubbers were investigated in comparison with those of the blend rubbers such as the tin-coupled star-shaped random copolymers of styrene-butadiene rubber（S-SBR）/natural rubber （NR） blend rubber and S-SBR/Cis-1, 4-polybutadiene rubber （Cis-BR） blend rubber.A novel multifunctional macromolecular organolithium initiator （PD-Sn-（RLi）3） was prepared via living anionic polymerization and used for the synthesis of miktoarm star copolymers in cyclohexane. The average molecular weight, polydispersity index, microstructure and unit composition of the miktoarm star copolymers were characterized with GPC and 1H-NMR. Performances of the miktoarm star styrene-butadiene rubbers were investigated in comparison with those of the blend rubbers such as the tin-coupled star-shaped random copolymers of styrene-butadiene rubber（S-SBR）/natural rubber （NR） blend rubber and S-SBR/Cis-1, 4-polybutadiene rubber （Cis-BR） blend rubber.

关 键 词：anionic polymerization multifunctional macromolecular organolithium initiator miktoarm star copolymer styrene-butadiene rubber 

分 类 号：O631.3[理学—高分子化学]