Synthesis, characterization of aluminum complexes and the application in ring-opening polymerization of l-lactide

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• 作者：Jincai Wu ; Xiaobo Pan ; Ning Tang ; Chu-Chieh Lin
• 关键词：Aluminum ; Sulfonamide/Shiff base ; Lactide ; Polymerization
• 刊名：European Polymer Journal
• 出版年：2007
• 期刊代码：35_00143057
• 类别：ms
• 出版时间：December 2007
• 卷：43
• 期：12
• 页码：5040-5046
• 文件大小：291 K

摘要

Aluminum complexes supported by a sulfonamide/Shiff base ligand are described. Reaction of AlMe₃ with 1 equiv of ligand 1, gives methyl aluminum complex 2, and aluminum complex 3 is prepared by the reaction of complex 2 with 1 equiv of benzyl alcohol. Experimental results show that complex 3 is an efficient initiator for the ring-opening polymerization of lactide in controlled fashion, yielding polymers with expectative molecular weight and low polydispersity indexes. Furthermore, the complex 3 has isotactic selectivity for the ring-opening polymerization of rac-lactide.