| Crosslinking reaction in the cationic polymerization of 1, 3-pentadiene |
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| 作者姓名： | 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 |
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| 作者单位： | Chengdu Institute of Organic Chemistry，Chinese Academy of Sciences，Chengdu 610041，China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 29504032) |
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| 摘 要： | The cationic polymerization of 1,3-pentadiene (PD) initiated by AlCl_3 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 AlCl_3 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 AlCl_3 to produce a relatively high molecular weight polymer, or reducing crosslinking by lowering activity of carbocations.
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| 收稿时间： | 5 June 1998 |
Crosslinking reaction in the cationic polymerization of 1, 3-pentadiene |
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| Yuxing Peng,Wenchuan Zhang,Chaoping Xiao,Jialin Liu,Linfeng Cun,Zhaohui Zheng,Jianguo Deng,Ying Guan,Li Liu.Crosslinking reaction in the cationic polymerization of 1, 3-pentadiene[J].Science in China(Chemistry),1999,42(2):204-209. |
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| Authors: | Yuxing Peng Wenchuan Zhang Chaoping Xiao Jialin Liu Linfeng Cun Zhaohui Zheng Jianguo Deng Ying Guan Li Liu |
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| Institution: | (1) Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, 610041 Chengdu, China |
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| Abstract: | The cationic polymerization of 1, 3-pentadiene (PD) initiated by A1C13 in n-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 as tert-butyl chloride and allyl chloride could complex with AIC13 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 AIC13 to produce a relatively high molecular weight polymer, or reducing crosslinking by lowering activity of carbocations. |
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| Keywords: | cationic polymerization 1 3-pentadiene crosslinking initiation |
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