C_(60)Cl_n对阴离子活性聚苯乙烯和对活性聚苯乙烯-b-聚异戊二烯的偶联作用  

COUPLING EFFECT OF C_ (60)Cl_n ON ANIONIC LIVING POLYSTYRENE AND ON POLYSTYRENE-b-POLYISOPRENE BLOCK COPOLYMER

作　　者：于军[1] 梁玉华[1] 柳庆春[1] 华静[1] 陈滇宝[1] 

机构地区：[1]青岛科技大学高分子科学与工程学院,青岛266042

出　　处：《高分子学报》2004年第5期749-753,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金资助项目 (基金号 2 0 0 740 18)

摘　　要：On the basis of former reports,C 60Cl n was used as a novel coupling agent to react with active polymer chains in anionic polymerization of styrene and copolymerization of styrene and isoprene initiated by n-BuLi, respectively.The UV-Vis spectra of coupling products showed that C 60Cl n was bonded to the polymer chain.The various samples were analyzed by GPC using a refractive index(RI) detector and an ultraviolet(UV) detector set at 340?nm for the absorption of C 60 and its derivatives.The results revealed that there is a new peak containing C 60 after coupling reaction between C 60Cl n and polymer chains,and the polydispersity of the coupling products is broadened,which demonstrated that coupling reaction has taken place and polymer chains are covalently bonded to the molecule of C 60Cl n.It was calculated that about two polystyrene chains are attached to a C 60Cl n molecule,and it demonstrated that two mechanisms,i.e.substitution reaction and addition reaction,have taken place simultaneously during the coupling reaction.On the basis of former reports, C60Cln. was used as a novel coupling agent to react with active polymer chains in anionic polymerization of styrene and copolymerization of styrene and isoprene initiated by n-BuLi, respectively. The UV-Vis spectra of coupling products showed that C60Cln. was bonded to the polymer chain. The various samples were analyzed by GPC using a refractive index(RI) detector and an ultraviolet( UV) detector set at 340 nm for the absorption of C-60 and its derivatives. The results revealed that there is a new peak containing C-60 after coupling reaction between C60Cln and polymer chains, and the polydispersity of the coupling products is broadened, which demonstrated that coupling reaction has taken place and polymer chains are covalently bonded to the molecule of C60Cln. It was calculated that about two polystyrene chains are attached to a C60Cln, molecule, and it demonstrated that two mechanisms, i.e. substitution reaction and addition reaction, have taken place simultaneously during the coupling reaction.

关 键 词：阴离子活性聚苯乙烯 聚苯乙烯-b-聚异戊二烯 偶联剂 阴离子聚合 氯化富勒烯 

分 类 号：O631[理学—高分子化学]