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化学学报
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化学学报 ›› 2004, Vol. 62 ›› Issue (2): 213-218. 上一篇    下一篇

研究论文

含羧基的含氟嵌段共聚物的合成及表面性能研究

李虹, 张兆斌, 胡春圃, 吴树森, 应圣康   

  1. 华东理工大学材料科学与工程学院, 上海, 200237
  • 投稿日期:2003-05-20 修回日期:2003-08-06 发布日期:2014-01-26
  • 通讯作者: 胡春圃,E-mail:cphu@guomai.sh.cn E-mail:cphu@guomai.sh.cn
  • 基金资助:
    上海市重点学科建设项目和东华大学纤维材料改性国家重点实验室开放课题资助项目.

Synthesis and Surface Properties of Fluorinated Block Copolymers Containing Carboxylic Groups

LI Hong, ZHANG Zhao-Bin, HU Chun-Pu, WU Shu-Sen, YING Sheng-Kang   

  1. Laboratory of Living Polymerization, East China University of Science & Technology, Shanghai 200237
  • Received:2003-05-20 Revised:2003-08-06 Published:2014-01-26

PDF

446

被引次数

59

利用原子转移自由基聚合反应以及随后的大分子链中叔丁酯基团的水解反应,合成了一系列具有不同含氟量和羧基含量的二嵌段共聚物,并分别通过GPC, 1H NMR和FT-IR对共聚物的组成和结构进行了表征.进一步考察了这些含羧基或羧酸钠基团的含氟嵌段共聚物在吡咯烷酮或水中的溶解性能、临界胶束浓度、表面活性、达到饱和吸附时每个分子在表面所占据的面积,以及成膜后的临界表面张力等性能.实验结果表明,此含氟嵌段共聚物能显著降低吡咯烷酮和水的表面张力,成膜后表现出与聚四氟乙烯极为接近的低表面能特性.

关键词: 原子转移自由基聚合, 含氟嵌段共聚物, 羧基, 溶液性能, 膜表面性能

A series of well-defined fluorinated block copolymers containing carboxylic acid or sodium carboxylate was prepared via atom transfer radical polymerization (ATRP), followed by hydrolysis reaction of tertiary butyl ester groups existing in the macromolecular chains. The structures and compositions of the block copolymers were characterized by GPC, 1H NMR and FT-IR, respectively. The solubility behaviors of these block copolymers in some organic solvents or water were examined. The surface activities of the block copolymers, such as the critical micelle concentration and the occupied area per molecule, as well as the critical surface tension for such block copolymers were measured. The experimental results showed that the block copolymers exhibited the high surface activity in solution and the low surface energy of prepared films just like polytetrafluoroethylene.

Key words: atom transfer radical polymerization, fluorinated block copolymer, carboxylic group, solution behavior, surface property