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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (9): 1126-1130. 上一篇    下一篇

研究简报

基于聚亚甲基的三嵌段聚合物: 合成及其多孔薄膜的制备

吕会朝1,2，徐慎刚1，赵巧玲2，黄晋2，曹少魁*,1，马志*,2   

  1. (1郑州大学材料科学与工程学院 郑州 450052)
    (2中国科学院上海有机化学研究所 上海 200032)
  • 投稿日期:2010-11-24 修回日期:2010-12-24 发布日期:2011-01-04
  • 通讯作者: 马志 E-mail:mazhi728@sioc.ac.cn

Block Copolymers Based on Polymethylene: Synthesis and Fabrication of Their Porous Films

Lü Huichao1,2 Xu Shengang1 Zhao Qiaoling2 Huang Jin2 Cao Shaokui*,1 Ma Zhi*,2   

  1. (1 School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052)
    (2 Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032)
  • Received:2010-11-24 Revised:2010-12-24 Published:2011-01-04

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1110

被引次数

20

利用叶立德活性聚合与原子转移自由基聚合(ATRP)相结合的方法制备得到基于聚亚甲基的两、三嵌段聚合物. 首先由叶立德活性聚合及氧化反应得到末端羟基的聚亚甲基(PM-OH), 再与2-溴异丁酰溴反应得到含溴末端的大分子引发剂(PM-Br), 之后引发丙烯酸叔丁酯的ATRP聚合得到聚亚甲基-b-聚丙烯酸叔丁酯(PM-b-P-t-BA)|最后再引发苯乙烯的ATRP聚合得到聚亚甲基-b-聚丙烯酸叔丁酯-b-聚苯乙烯(PM-b-P-t-BA-b-PS). 利用呼吸图法将所得到上述嵌段共聚物分别以三氯甲烷(CHCl3)和二硫化碳(CS2)作为溶剂制备多孔薄膜, 用扫描电子显微镜(SEM)观察所制备薄膜的形貌, 研究了聚苯乙烯(PS)链段长度和制膜温度对多孔薄膜形貌的影响.

关键词: 聚亚甲基, 嵌段共聚物, 多孔膜, 呼吸图

Di- and tri-block copolymers based on polymethylene were synthesized via the combination of living polymerization of ylides and atomic transfer radical polymerization (ATRP). Firstly, hydroxyl terminated polymethylene (PM-OH) was synthesized via living polymerization of ylides followed by oxidation. The macroinitiator (PM-Br) was obtained by the reaction of PM-OH and 2-bromo-2-methylproplonyl bromide, then initiated the ATRP of tert-butyl acrylate to obtain PM-b-P-t-BA diblock copolymers. Subsequently, PM-b-P-t-BA-b-PS triblock copolymers were prepared using ATRP of styrene. Porous films of such di-block and tri-block copolymers were fabricated via breath-figure method with chloroform and carbon disulfide as solvent, respectively. The morphology of such porous film was observed by scanning electron microscopy (SEM). The effects of PS segment and temperature on the morphology of porous film were investigated.

Key words: polymethylene, block copolymer, breath figure, porous film