中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (1): 62-64.

• 研究论文 • 上一篇    下一篇

二(2,6-二叔丁基-4-个甲基苯氧基)钐催化丙交酯开环聚合

姚英明1, 沈琪1, 扈晶余2   

  1. 1. 苏州大学化学化工学院 苏州 215006;
    2. 中国科学院长春应用化学研究所 长春
  • 收稿日期:1997-03-04 修回日期:1997-09-04 出版日期:1998-02-10 发布日期:1998-02-10
  • 基金资助:
    国家自然科学基金;江苏省自然科学基金;中国科学院上海有机化学研究所金属有机开放实验室资助

Ring-Opening Polymerization of Lactide by (ArO)2Sm(THF)4(ArO=2, 6-ditertbutyl-4-methylphenoxo-)

Yao Yingming1, Shen Qi1, Hu Jingyu2   

  1. 1. School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006;
    2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun
  • Received:1997-03-04 Revised:1997-09-04 Published:1998-02-10 Online:1998-02-10

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摘要： 聚丙交酯(PLA)可以生物降解,产物无毒,可用于外科手术的缝合线、人造器官以及药物缓释等方面,因此引起了人们的广泛注意.丙交酯的开环聚合是合成聚丙交酯的一种方便方法,所用的催化剂主要是主族及副族金属的配合物,如双金属氧桥配合物[1],烷基金属有机化 合物[2],异丙氧基铝[3]以及卟啉铝[4]等.

关键词: 丙交酯, 开环聚合, 两价稀土化合物

Abstract: Ring-opening polymerization of D,L-lactide has been successfully carried out by(ArO)2Sm(THF)4(ArO = 2, 6-ditertbutyl(4-methylphenoxo-) as catalyst for the first time.The catalyst contentration, monomer concentration and solvent showed a marked effect onthe polymerization.The polymerization rate decrease with increase of monomer concentra-tion and decrease of catalyst concentration.The initiation mechanism has been discussed ac-cording to the results of end-group analysis of oligomer by IR.The active species are sup-posed to be a samarium enolate formed from the reaction of (ArO)2Sm(THF)4 with lactide.

Key words: lactide, ring-opening polymerization, divalent lanthanide complex

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