Polymerization of styrene catalyzed by rare earth Schiff base complexes

Xufeng NI ¹Jianjiang YANG ¹Zhiquan SHEN¹

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作者信息

1. Key Laboratory of Macromolecule Synthesis and Functionalization (Ministry of Education), Institute of Polymer Science, Zhejiang University, Hangzhou 310027, China
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Abstract

The rare earth Schiff base complex Nd (H2Salen)2Cl3·2C2H5OH was synthesized by a simple and convenient method and characterized by IR and elemental analysis. The catalyst system composed of Nd (H2Salen)2Cl3·2C2H5OH/AI(i-Bu)3/CCl4 is effective for the polymerization of styrene (St). The optimum conditions are as follows: [St]/[Nd] = 1000, [CCl4]/[Nd] =9, [Al]/[Nd] = 30, and polymerization at 50℃ for 20 h. The resulting polystyrene was characterized by NMR and GPC. The results of NMR show that the polymer obtained had a stereoregularity with 52.3% isotacticity and 47.7% syndiotacticity without any random structure.

Key words

rare earth Schiff base complex/styrene/polymerization

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基金项目

国家自然科学基金(20434020)

国家重点基础研究发展计划(973计划)(G 2005CB623802)

出版年

2008

中国化学前沿

高等教育出版社

中国化学前沿

ISSN：1673-3495

被引量1

参考文献量7

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