高等学校化学学报

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (9): 856.

• 研究简报 • 上一篇    下一篇

三乙基铝-单烷基磷酸酯催化体系下的环氧丙烷聚合及13C-NMR谱的研究

叶鸿伟1, 王新灵2, 胡耿源2, 杨士林2   

  1. 1. 浙江大学中心实验室;
    2. 浙江大学化学系
  • 收稿日期:1986-03-11 出版日期:1987-09-24 发布日期:1987-09-24
  • 基金资助:

    中国科学院科学基金

Polymerization of Polypropylene Oxide in the Presence of a Triethylaluminium-Monoalkyl-Phosphate Catalytic System and Study of 13C-NMR Spectra of Polymer

Ye Hongwei1, Wang Xinling2, Hu Gengyuan2, Yang Shilin2   

  1. 1. Central Laboratory, Zhejiang University, Hangzhou;
    2. Department of Chemistry, Zhejiang University, Hangzhou
  • Received:1986-03-11 Online:1987-09-24 Published:1987-09-24

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摘要： 使用烷基铝-乙酰丙酮-水体系催化环氧化合物的聚合,可得到分子量百万以上的聚合物,Kida采用三异丁基铝-强磷酸-N,N二甲基苯胺体系对环氧化合物进行催化聚合,Wolfe采用三烷基铝一乙酰丙酮-苯基噻唑-水体系对环氧化合物进行催化聚合,Kuran采用连苯三酚-二乙基锌对环氧丙烷进行催化,并且对聚合物作了13C-NMR谱的研究,1985年Bovey等研究了聚环氧丙烷的氢谱,确定了聚环氧丙烷各种异构体的构型。

Abstract: A catalytic system, (C2H5)3A1/ROPO(OH)2, exhibits higher activity in the polymerization of propylene oxide(PO), The polypropylene oxide and its crystalline acetone-insoluble fraction were determined by the 13C-NMR.In the 13C-NMR spectra of the PPO, we discovered the most direct way of identifying the two kinds of lines. As an illustration, the two kinds of lines in 13C-NMR were due to results of methine and methylene carbons of a high molecular weight PPO, respectively. Chemical-shift and split of four configuration of isotactic, heterotactic and syndiotactic have already been compared for the PPOwith different catalytic systems, (C2H5)3A1/ROPO(OH)2, (C2H5)3A1/H3PO4,and(C2H5)3Al/AcAc/H2O.

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