Abstract

In combination with methyllithium, a 2,6-bis(amino)phenol zinc complex 1 was used in the ring-opening polymerization of δ-valerolactone in the absence or presence of benzyl alcohol and showed high efficiency, mainly producing cyclic and linear polyvalerolactones, respectively. On the basis of homopolymerization, the ring-opening copolymerization of ε-caprolactone and δ-valerolactone was investigated. The P(CL-co-VL) random copolymers, PCL-b-PVL and PVL-b-PCL diblock copolymers, were prepared by varying the feeding strategy (premixing or sequential feeding). The copolymer composition was adjusted by varying the feeding ratio of two monomers. The structure and thermal properties of obtained polymers were characterized by GPC, ¹H-NMR, ¹³C-NMR, MALDI-TOF mass spectroscopy, and DSC, respectively.

中文翻译：

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2,6-双（氨基）酚锌配合物催化ε-己内酯与δ-戊内酯的开环共聚

摘要

在不存在或存在苯甲醇的情况下，将2,6-双（氨基）酚锌配合物1与甲基锂结合用于δ-戊内酯的开环聚合反应中，并显示出较高的效率，主要生产环状和线性聚戊内酯，分别。在均聚的基础上，研究了ε-己内酯与δ-戊内酯的开环共聚反应。P（CL- co -VL）无规共聚物PCL- b -PVL和PVL- b-PCL二嵌段共聚物，通过改变进料策略（预混合或顺序进料）制备。通过改变两种单体的进料比来调节共聚物组成。分别通过GPC，¹ H-NMR，¹³ C-NMR，MALDI-TOF质谱和DSC表征获得的聚合物的结构和热性质。