高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 160.

• 论文 • 上一篇    下一篇

PS-PMMA嵌段共聚物/PMMA在选择性溶剂中的自组装行为

尹芬芳1, 史林启1, 安英丽1, 张望清1, 何炳林1, 郭世宜2   

  1. 1. 南开大学高分子化学研究所, 吸附分离功能高分子材料国家重点实验室;
    2. 南开大学高分子化学研究所生命科学学院, 天津 300071
  • 收稿日期:2001-11-27 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 史林启(1963年出生),男,博士,教授,博士生导师,从事高分子纳米结构功能材料和生物医用高分子的研究.E-mail:shilinqi@eyou.com E-mail:shilinqi@eyou.com
  • 基金资助:

    国家自然科学基金(批准号:59873012,50273015);教育部骨干青年教师基金资助

The Self-assembly Behavior of PS-PMMA/PMMA in Selective Solvents

YIN Fen-Fang1, SHI Lin-Qi1, AN Ying-Li1, ZHANG Wang-Qing1, HE Bing-Lin1, GUO Shi-Yi2   

  1. 1. State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Institute of Polymer Chemistry;
    2. College of Life Science, Nankai University, Tianjin 300071, China
  • Received:2001-11-27 Online:2003-01-24 Published:2003-01-24

摘要: 用动态光散射和透射电镜研究了嵌段共聚物聚苯乙烯-聚甲基丙烯酸甲酯(PS-b-PMMA)和其对应的均聚物聚甲基丙烯酸甲酯(PMMA)在选择性溶剂四氢呋喃/环己烷(THF/CYH)中的自组装行为.选择性溶剂对PS嵌段是良溶剂,对PMMA嵌段和均聚物PMMA是非良溶剂,实验结果表明,在适当的分子量及组成条件下,PS-PMMA/PMMA在选择性溶剂中形成了单分散的纳米胶束,均聚物PMMA与PMMA嵌段一同形成了胶束的核,通过控制均聚物PMMA的量可以在较大的范围内调整胶束的尺寸.

关键词: 聚甲基丙烯酸甲酯, 嵌段共聚物, 自组装, 胶束

Abstract: The self-assembly of PS-PMMA/PMMA in selective solvents was studied by dynamic laser light scattering(DLS) and transmission electron microscope(TEM). The selective solvent was the good solvent for PS block while it was a precipitant for PMMA block and homopolymer. The results showed that the PS-PMMA/PMMA with a proper molecular weight and composition could self-assemble into micelles with mono-dispersity distribution. The homopolymer(PMMA) could assemble into the core of the micelles by a special interaction with the block PMMA and accelerate the process of the micellization. The micelles with different sizes can be obtained conveniently by adjusting the content of the homopolymer.

Key words: Poly(methyl methacrylate), Block-copolymer, Self-assembly, Micelle

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