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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (18): 1937-1939. 上一篇    

研究简报

PS-b-P4VP/PFOA配合物在氯仿中的自组装及形态表征

疏亿万1, 刘晓亚*,1, 陈道勇2   

  1. (1江南大学化学与材料工程学院 无锡 214122)
    (2复旦大学高分子科学系和教育部聚合物分子工程重点实验室 上海 200433)
  • 投稿日期:2006-04-04 修回日期:2006-05-22 发布日期:2006-09-28
  • 通讯作者: 刘晓亚

Self-assembly of Perfluorooctanoic Acid and PS-b-P4VP in Chloroform and Morphological Characterization

SHU Yi-Wan1; LIU Xiao-Ya*,1; CHEN Dao-Yong2   

  1. (1 School of Chemical and Material Engineering, Southern Yangtze University, Wuxi 214122)
    (2 Department of Macromolecular Science and The Key Laboratory of Molecular Engineer-ing of Polymers, Fudan University, Shanghai 200433)
  • Received:2006-04-04 Revised:2006-05-22 Published:2006-09-28
  • Contact: LIU Xiao-Ya

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全氟辛酸(PFOA)与聚苯乙烯-b-聚-4-乙烯吡啶(PS-b-P4VP)的配合能诱导嵌段共聚物在其共同溶剂氯仿中胶束化. 胶束化不仅能形成棒状聚集体, 还能得到椭球形胶束. 当嵌段共聚物PS-b-P4VP浓度为1.0 g/L时, 使用光散射和扫描电镜研究了MR值(全氟辛酸与聚合物中吡啶环的物质的量比)在1/30到1/10之间的聚集行为及形态. 发现即使当MR值小到1/30时仍然形成稳定的聚集体. 通过扫描电镜观察发现: 改变MR值可以获得不同形态的聚集体.

关键词: 全氟辛酸, 聚苯乙烯-b-聚四乙烯吡啶, 胶束化

The complexes of perfluorooctanoic acid (PFOA) and polystyrene-b-poly-(4-vinylpyridine) (PS-b-P4VP) can induce micellization of the block copolymer in their common solvent chloroform. Rod-like and ellipsoidal aggregates form respectively by micellization. When the concentration of block copolymer is 1.0 g/L, DLS and SEM measurements were used to characterize their aggregation and morphology under the molar ratio of PFOA to the pyridine rings (MR) being 1/30 to 1/10. It is unexpected that the complex still self-assembles into stable aggregates even when the MR value is as low as 1/30. The different morphologies of the aggregation can be found by using SEM during the change of the MR value.

Key words: perfluorooctanoic acid, polystyrene-b-poly-(4-vinylpyridine), micellization