阳离子聚合
活性阳离子聚合
乙烯基醚
化学
聚合
高分子化学
离子聚合
阴离子加成聚合
乙醚
三乙胺
链生长聚合
开环聚合
自由基聚合
聚合物
有机化学
共聚物
作者
Chenqi Zhao,Penghua Yan,Ruofan Liu,Wei Li,Yushun Jin,Qisong Shi,Yibo Wu
摘要
Abstract The cationic polymerization of isobutene vinyl ether(IBVE) contains waters system was achieved by using triphenylmethylium tetrakis‐(pentafluorophenyl)borate [Ph 3 C][B(C 6 F 5 ) 4 ], which overcame the harsh experimental requirements of traditional cationic polymerization. The influences of water content, solvent polarity, and reaction temperature on polymerization were studied. The end structure of the polymer was analyzed by 1 H‐NMR. Combined with the effect of the proton trapping agent and triethylamine salt which can trap [H + ], it was found that there was a reversible equilibrium between [Ph 3 C + ] and [H + ] active species during the polymerization process. The cationic polymerizations of isobutyl vinyl ether were initiated by these two active species simultaneously. The controllable cationic polymerization of isobutyl vinyl ether was achieved by the addition of ethyl methyl carbonate and ethyl benzoate. Gaussian 09 W simulation confirms the polymerization mechanism.
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