高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (1): 137.

• 论文 • 上一篇    下一篇

稀土配位催化环硫氯丙烷与环氧丙烷开环共聚合研究

孙维林, 沈之荃, 张一烽   

  1. 浙江大学高分子科学及工程学系, 杭州 310027
  • 收稿日期:1995-01-16 出版日期:1996-01-24 发布日期:1996-01-24
  • 通讯作者: 沈之荃
  • 作者简介:孙维林,男,38岁,博士,现在中国科学院化学研究所从事博士后研究工作.
  • 基金资助:

    国家自然科学基金

Studies on the Copolymerization of Chloromethylthiirane with Propylene Oxide by Rare Earth Coordination Catalysts

SUN Wei-Lin, SNEN Zhi-Quan, ZHANG Yi-Feng   

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027
  • Received:1995-01-16 Online:1996-01-24 Published:1996-01-24

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被引次数

4

摘要： 报道了稀土配位催化剂对环硫氯丙烷(CMT)与环氧丙烷(PO)的共聚合。许多稀土化合物与三异丁基铝组成的催化体系都能使两者共聚;尤为突出的是Y(P204)3-Al(i-Bu)3-H2O催化体系对此共聚反应具有优良的催化活性,最大催化效率达6000g/molY,分子量较大([η]达1.0dL/g),产率在50%以上。应用IR、NMR、GPC等手段对共聚物进行了表征,测得CMT(1)与PO(2)的共聚率分别为r1=0.041,r2=1.37.

关键词: 稀土配位催化剂, 环硫氧丙烷, 环氧丙烷, 开环共聚合, 竞聚率测定

Abstract: The copolymerization of chloromethylthiirane (CMT)with propylene oxide (PO)was investigated by using rare earth coordination catalysts for the first time.It has been discovered that rare earth coordination catalysts,especially Y(P204)3-Al(i-Bu)3-H2Osystem,are effective catalysts for preparing high molecular weight([η]about 1.0 dL/g)CMT-POcopolymer in a high yield(50%).The catalytic efficiency of Y(P204)3-Al(i-Bu)3-H2Osystemreached 6000 g/mol Y. The copolymer structure was also characterized by IR,NMR,GPC.The reactivity ratio CMT(1)and PO(2) were obtained as r1=0.41 and r2=1.37 respective-ly.

Key words: Rare earth coordination catalysts, ChloromethyIthiirane(CMT), Propylene ox-ide(PO), Ring-opening copolymerization, Reactivity ratio determination

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