高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (4): 869.doi: 10.7503/cjcu20130959

• 高分子化学 • 上一篇    下一篇

席夫碱-铝化合物催化己内酯的开环聚合

曲智1,2, 李想1, 庞烜1, 段然龙1, 高波1, 陈学思1()   

  1. 1.中国科学院长春应用化学研究所, 生态环境高分子材料重点实验室, 长春 130022
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2013-09-29 出版日期:2014-04-10 发布日期:2014-02-27
  • 作者简介:联系人简介: 陈学思, 男, 博士, 研究员, 博士生导师, 主要从事生物医用材料研究. E-mail: xschen@ciac.ac.cn
  • 基金资助:
    国家自然科学基金(批准号: 51173183, 21004061, 21204082, 51033003, 51021003)和国家“八六三”计划项目(批准号: 2011AA02A202)资助

Aluminum Schiff Base Catalyst for Ring-opening Polymerization of ε-Caprolactone

QU Zhi1,2, LI Xiang1, PANG Xuan1, DUAN Ranlong1, GAO Bo1, CHEN Xuesi1,*()   

  1. 1. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-09-29 Online:2014-04-10 Published:2014-02-27
  • Contact: CHEN Xuesi E-mail:xschen@ciac.ac.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21204082, 51173183, 21004061, 51021003) and the National High Technology Research and Development Program of China(No.2011AA02A202)

摘要:

设计合成了一系列不对称席夫碱-铝化合物1a~3a, 考察了化合物在己内酯(CL)开环聚合反应中的催化性能, 研究发现, 配合物对CL聚合具有较高的反应活性, 并具有活性聚合的特点, 聚合反应均符合一级动力学反应特征. 在其它条件相同时, 吸电子取代的配合物的催化速率约为无吸电子的配合物的4倍, 表明席夫碱配体上吸电子基团的存在可以提高配合物催化聚合的活性.

关键词: ε-己内酯, 开环聚合, 席夫碱-铝配合物催化剂

Abstract:

The catalysts with high activity and low toxicity for ring opening polymerization(ROP) of ε-caprolactone had drawn much attention both in academia and industry. A series of asymmetric Schiff base aluminum complexes containing ligands that differed in their steric properties were synthesized. Their catalytic properties in the solution polymerization of ε-CL were examined. The kinetics studies of all complexes/2-propanol indicated that all of polymerizations were first-ordered reaction to monomers, and the polymerization rate of electrophilic substituted complex was about 4 times the non-electrophilic substituted complex in ROP of ε-CL. The results evaluated that the electrophilic substituent of ligands has great influence on the catalytic activity of the complex.

Key words: ε-Caprolactone, Ring-opening polymerization, Schiff base aluminun catalyst

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