高等学校化学学报

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (9): 1537.

• 论文 • 上一篇    下一篇

马来酸酐-苯乙烯本体自由基聚合反应

董宇平1, 封麟先1, 杨士林1, 沈家骢2   

  1. 1. 浙江大学高分子科学与工程系, 杭州 310027;
    2. 吉林大学化学系, 长春 130023
  • 收稿日期:1996-06-20 出版日期:1997-09-24 发布日期:1997-09-24
  • 通讯作者: 董宇平, 男, 33岁, 博士, 副教授, 现在北京理工大学工作.
  • 作者简介:董宇平, 男, 33岁, 博士, 副教授, 现在北京理工大学工作.
  • 基金资助:

    北京理工大学引进人才启动基金

The Bulk Free Radical Copolymerization of Styrene and Maleic Anhydride

DONG Yu-Ping1, FENG Lin-Xian1, YANG Shi-Lin1, SHEN Jia-Cong2   

  1. 1. Department of Polymeric Science and Engineering, Zhejiang University, Hangzhou 310027;
    2. Department of Chemistry, Jilin University, Changchun 130023
  • Received:1996-06-20 Online:1997-09-24 Published:1997-09-24

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被引次数

12

摘要： 在马来酸酐-苯乙烯本体聚合反应过程中, 于70℃和低引发剂浓度(0.59～1.8×10-3mol／L条件下, 共聚物组成与单体的配比无关, 生成无规共聚物;在高引发剂浓度(2×10-2mol／L), 随马来酸酐单体含量的增加, 趋向生成1:1交替共聚物.温度的提高(≤140℃)可以使生成的共聚物结构向1:1组成移动, 当温度超过140℃时将生成无现共聚物.在本体聚合反应体系中, 存在共聚反应和苯乙烯的均聚反应, 而且随着温度的提高, 均聚反应的程度增加.

关键词: 苯乙烯, 马来酸酐, 本体自由基共聚合反应

Abstract: The comPosition of copolymer depended on the concentration of initiator in thebulk free radical polymerization of styrene (St) and maleic anhydride (MA) at 7O ℃. In Iowconcentration of initiator the cornposition of copolymer had nothing to do with the content ofmonomer in the feed. However, in high concentration of initiator the product of polymeriza-tion contained polystyrene and random copolymer. Homopolymerization of styrene took placewhen copolymerization stopped at lower conversion. At the sarne time, copolymer tended to1: 1 alternation with the increasing of content of MAin the feed in the range of 70-160℃.The experimental results indicated that the two sorts of polymerization simultaneously exist-ed if temperature was over 12O℃. The conversion of copolymerization had less dependenceon the temperature and were less than 50%. The composition of copolymers tended to 1: 1alternation as the temperature approached 140℃. The random copolymers of St and MAwere yielded above 140 ℃.

Key words: Styrene, Maleic anhydride, Bulk free radical copolymerization

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