高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (7): 1138.

• 论文 • 上一篇    下一篇

乙烯基单体-N-苯基马来酰亚胺共聚物序列结构研究

单国荣, 翁志学, 黄志明, 潘祖仁   

  1. 浙江大学化工系高分子科学与工程研究所, 杭州 310027
  • 收稿日期:1998-11-16 出版日期:1999-07-24 发布日期:1999-07-24
  • 通讯作者: 单国荣,男,30岁,博士,讲师.
  • 作者简介:单国荣,男,30岁,博士,讲师.
  • 基金资助:

    教育部博士学科点专项科研基金(批准号:9533504)资助课题

Studies on the Sequence Structure of Vinyl Monomer-N-phenylmaleimide Copolymers

SHAN Guo-Rong, WENG Zhi-Xue, HUANG Zhi-Ming, PAN Zu-Ren   

  1. Institute of Polymer Science and Engineering, Department of Chemical Engineering, Zhejiang University, Hangzhou, 310027
  • Received:1998-11-16 Online:1999-07-24 Published:1999-07-24

摘要: 用NMR谱研究了甲基丙烯酸甲酯(MMA)-N-苯基马来酰亚胺(PMI)、苯乙烯(St)-PMI共聚物的序列结构.结果表明,MMA-PMI共聚物单元属无规序列分布,St-PMI共聚物单元属交替序列分布.由1HNMR结果可得MMA-PMI共聚物空间立构部分信息,由13CNMR三单元组实验结果算得的序列长度与末端基理论计算结果一致,且MMA-PMI共聚物链属一级Markov链.由St-PMI共聚物序列长度与末端基理论计算结果的偏差提出更为合理的增长基元反应.

关键词: 乙烯基单体, N-苯基马来酰亚胺, 共聚物, 序列结构

Abstract: The sequence structure of methyl methacrylate (MMA)-N-phenylmaleimide (PMI) and styrene (St)-PMIcopolymers was studied in detail with NMR spectroscopy. MMA PMIcopolymer was in random sequence distribution, and St-PMIcopolymer was alternating in structure. Some stereo information of MMA-PMIcopolymer could be obtained from 1HNMR result. The sequence length obtained from the triad of copolymer by 13CNMR was in agreement with that calculated from the reactivity ratios. From the triad of copolymer by 13CNMR, the copolymer chain of MMA-PMI was proved being one order Markov chain. More suitable propagation reactions were proposed from the deviation of sequence distribution of St-PMIcopolymer.

Key words: Vinyl monomer, N-phenylmaleimide, Copolymer, Sequence structure

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