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Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (20): 2331-2335. Previous Articles     Next Articles

SEBS的间接氯甲基化研究

李礼1，韩利志1，周涛1，张爱民*,1，周立新2，周燎原2，梁红文2   

  1. (1四川大学高分子科学与工程国家重点实验室 成都 610065)
    (2巴陵石油化工有限责任公司合成橡胶事业部 岳阳 414014)
  • 投稿日期:2007-04-08 修回日期:2007-05-22 发布日期:2007-10-28
  • 通讯作者: 张爱民

Investigation of Indirect Chloromethylation for SEBS

LI Li1 HAN Li-Zhi1 ZHOU Tao1 ZHANG Ai-Ming*,1 ZHOU Li-Xin2 ZHOU Liao-Yuan2 LIANG Hong-Wen2   

  1. (1 State Key Laboratory of Polymer Material and Engineering, Sichuan University, Chengdu 610065)
    (2 Synthetic Rubber Business Department of Baling Petrochemical Co. Ltd, Yueyang 414014)
  • Received:2007-04-08 Revised:2007-05-22 Published:2007-10-28
  • Contact: ZHANG Ai-Ming

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An indirect chloromethylation of poly(styrene-b-ethylene-co-butadiene-b-styrene) (SEBS) was carried out with dimethoxymethane and sulphurous oxychloride as starting materials. The structure of chloromethylated SEBS was characterized with FIRT and 1H NMR, and its chloromethylation degree was measured with a Volhard method. The catalysis effects of different catalysts were compared, and results showed that ZnCl2 had the best catalystic effects. Only 0.056 mol/L of catalyst was needed to chloromethylate SEBS to 28.94% chloromethylation degree at 45 ℃ in 12 h. Effects of catalyst concentration, reaction temperature and reaction time on the chloromethylation degree were discussed.

Key words: poly(styrene-b-ethylene-co-butadiene-b-styrene) (SEBS), chloromethylation reaction, intrinsic viscosity