Crosslinking reaction in the cationic polymerization of 1, 3-pentadiene  

作　　者：彭宇行 张文传 肖潮萍 刘佳林 寸琳锋 郑朝辉 邓建国 关英 刘莉 

出　　处：《Science China Chemistry》1999年第2期204-209,共6页中国科学（化学英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 29504032)

摘　　要：The eationic polymerization of 1, 3-pentadiene (PD) initiated by A1C13 inn-hexane was carried out. Effects of arenes, alkyl halides and ethers on the gel formation resulting from crosslinking reaction were investigated. The crosslinking was reduced by various arenes through a chain transfer mechanism. Alkyl halides such asrert-butyl chloride and allyl chloride could complex with AlCl3 to generate an initiating system giving rise to a gel-free polymerization, while benzyl chloride reduced the formation of gel by chain transfer. Ethers exerted two effects on the polymerization system: giving a complex initiating system with AlCl3 to produce a relatively high molecular weight polymer, or reducing crosslinking by lowering activity of carbocations.The cationic polymerization of 1,3-pentadiene （PD） initiated by AlCl₃ in n-hexane was carried out. Effects of arenes, alkyl halides and ethers on the gel formation resulting from crosslinking reaction were investigated. The erosslinking was reduced by various arenes through a chain transfer mechanism. Alkyl halides such as tert-butyl chloride and allyl chloride could complex with AlCl₃ to generate an initiating system giving rise to a gel-free polymerization, while benzyl chloride reduced the formation of gel by chain transfer. Ethers exerted two effects on the polymerization system: giving a complex initiating system with AlCl₃ to produce a relatively high molecular weight polymer, or reducing crosslinking by lowering activity of carbocations.

关 键 词：CATIONIC POLYMERIZATION 1 3-pentadiene CROSSLINKING initiation. 

分 类 号：O631.5[理学—高分子化学]