高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (5): 827.

• 论文 • 上一篇    

SEBS的氯甲基化及羟甲基化

沈重1, 张焱1, 谢静薇1, 杨一青2   

  1. 1. 复旦大学高分子科学系和教育部聚合物分子工程实验室, 上海 200433;
    2. 上海石油化工研究院, 上海 201208
  • 出版日期:1999-05-24 发布日期:1999-05-24
  • 通讯作者: 谢静薇
  • 作者简介:沈 重,男,25岁,硕士研究生.
  • 基金资助:

    国家自然科学基金(批准号:59773023)资助课题

Chloromethylation and Hydroxymethylation of SEBS

SHEN Zhong1, ZHANG Yan1, XIE Jing-Wei1, YANG Yi-Qing2   

  1. 1. Department of Macromolecular Science, Laboratory of Molecular Engineering of Polymers of the State Education Ministry of China, Fudan University, Shanghai, 200433;
    2. Shanghai Institute of Petrochemical Technology, Shanghai, 201208
  • Online:1999-05-24 Published:1999-05-24

PDF (PC)

被引次数

28

摘要： 氢化聚苯乙烯-(乙烯丁烯无规共聚物)-聚苯乙烯三嵌段共聚物(SEBS)是一种性能优良的热塑性弹性体[1～3].由于其结构明确,分子量均一,如果能引入含量可控的功能基团,在理论研究方面具有重要意义.

关键词: SEBS, 氯甲基化, 相转移催化剂, 羟甲基化

Abstract: Hydroxymethyl groups were introduced into hydrogenated poly(styrene-block-butadiene-block-styrene)(SEBS) via chemical modification of the PSblocks by a simple three step procedure, i.e. , chloromethylation via Friedel-Crafts reaction with stannic chloride(SnCl4) as catalyst in chloroform solution in the presence of trioxane and chlorotrimethylsilane, followed by esterification and hydrolysis by using phase transfer catalyst TBAB. 1H NMR, FTIR, SEC and elemental analysis were employed to characterize the products. The results show that the degree of functionalization could be controlled in the first step, and the convertions of chloromethyl to ester and ester to hydroxyl were complete. Meanwhile molecular weight distribution of the product was still narrow. Crosslinking could be avoided when the polymer concentration was kept lower than its overlap concentration.

Key words: SEBS, Chloromethylation, PTC, Hydroxymethylation

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