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Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (24): 2609-2614. Previous Articles     Next Articles

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以偶氮二异庚腈为引发剂的丙烯腈的低温溶液共聚合

王麒1，张森*,2，陈惠芳1，潘鼎*,1   

  1. (1高性能纤维及制品教育部重点实验室(B) 东华大学材料科学与工程学院 上海 201620)
    (2中国科学院上海有机化学研究所有机氟化学重点实验室 上海 200032)
  • 投稿日期:2010-10-29 修回日期:2010-11-22 发布日期:2010-11-22
  • 通讯作者: 潘鼎 E-mail:dingpan@dhu.edu.cn

Solution Copolymerization of Acrylonitrile Initiated by 2,2 - Azobis(2,4-dimethylvaleronitrile) at Low Temperature

Wang Qi1 Zhang Sen*,2 Chen Huifang1 Pan Ding*,1   

  1. (1 The Key Laboratory of High-Performance Fiber and Product (B), Ministry of Education, College of Material Science & Engineering, Donghua University, Shanghai 201620)
    (2 Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032)
  • Received:2010-10-29 Revised:2010-11-22 Published:2010-11-22

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Polyacrylonitrile resins with high molecular weight were obtained by ternary copolymerization of acrylonitrile, itaconic acid and methyl acrylate in dimethyl sulfoxide at low temperature using 2,2 -azobis(2,4-dimethylvaleronitrile) as initiator. Orthogonal design method was employed to investigate the effect of the polymerization temperature, the concentrations of the initiator and the comonomers on the molecular weight and the conversions of the comonomers, and thus the optimized formula was achieved. The copolymer was characterized by FT-IR, NMR and GPC. The results showed that the low polymerization temperature and feeding of the initiator and the high concentration of the comonomers would all benefit in increasing the molecular weight of the copolymer, and the concentration of the initiator is the most important factor to influence the molecular weight of the copolymer.

Key words: acrylonitrile, 2,2 -azobis(2,4-dimethylvaleronitrile), low-temperature solution copolymerization