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苄醇存在下脂肪叔胺催化内酯开环聚合

DOI: 10.3724/SP.J.1105.2011.10292, PP. 1231-1236

Keywords: 脂肪族叔胺,碳酸三亚甲基酯(TMC),丙交酯,开环聚合

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Abstract:

为研究脂肪叔胺结构对内酯开环聚合规律的影响,以三乙胺(TEA)、N,N,N',N'-四甲基乙二胺(TMEDA)、N,N,N',N″,N″-五甲基二亚乙基三胺(PMDTA)3种不同结构的叔胺催化碳酸三亚甲基酯(TMC)和左旋丙交酯(L-LA)开环聚合.结果显示,在55℃的THF溶液中,以苄醇为引发剂,3种叔胺均能催化TMC和L-LA的开环聚合,聚合物的分子量与单体转化率成线性关系,表现出活性聚合特征.三者催化能力为TEA

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