Cationic polymerization of 1,3-pentadiene and 2-methylpropene: Direct initiation is a general mechanism with AlCl₃ in polar medium

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• 作者：He Wang ; Vé ; ronique Bennevault-Celton ; Bin Cheng ; Hervé ; Cheradame
• 关键词：Aluminum trichloride ; Cationic polymerization ; Molecular mechanisms ; 1 ; 3-Pentadiene ; 2-Methylpropene ; Polar media
• 刊名：European Polymer Journal
• 出版年：2007
• 期刊代码：35_00143057
• 类别：ms
• 出版时间：March 2007
• 卷：43
• 期：3
• 页码：1083-1090
• 文件大小：216 K

摘要

Following previous results showing that direct initiation was operating in the cationic polymerization of 1,3-pentadiene in the presence of AlCl₃ in non-polar medium, it is shown on the same system that direct initiation also occurs in polar medium. In the case of 2-methylpropene the use of a proton trap (DtBP) allowed to show that at −30 °C, direct initiation mechanism was operating either in 64/36 or in 36/64 (v/v) CH₂Cl₂/pentane mixtures. These results show that direct initiation is a general mechanism with AlCl₃. SEC studies showed that for 2-methylpropene transfer can be minimized.