高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (9): 1567.

• 研究简报 • 上一篇    下一篇

疏水修饰聚丙烯酸共聚物在水溶液中的缔合作用

徐桂英, 杨延莲, 苑世领, 陈爱民, 郑立强   

  1. 山东大学胶体与界面化学教育部重点实验室, 济南 250100
  • 收稿日期:2000-05-17 出版日期:2001-09-24 发布日期:2001-09-24
  • 通讯作者: 徐桂英(1949年出生),女,教授,从事表面活性剂缔合体系研究.E-mail:ciclab@sdu.edu.cn E-mail:ciclab@sdu.edu.cn
  • 基金资助:

    教育部科学技术研究重点项目(批准号:99183);山东省科委项目(批准号:991122801)资助

Association of Copolymer Acrylic Acid/Methyl-acrylic acid/Butyl Acrylate in Aqueous Solution

XU Gui-Ying, YANG Yan-Lian, YUAN Shi-Ling, CHEN Ai-Min, ZHENG Li-Qiang   

  1. Key Lab. for Colloid & Interface Chem. of the Educational Ministry, Shandong University, Jinan 250100, China
  • Received:2000-05-17 Online:2001-09-24 Published:2001-09-24

PDF (PC)

被引次数

5

关键词: 共聚物, 胶束状团簇, 荧光探针, 微极性

Abstract: The associations of triblock copolymer made of acrylic acid, methyl-acrylic acid and butyl acrylate in aqueous solution as well as in NaCl and CaCl2 solutions were studied by using fluorescence. The micelle-like clusters(MLCs) of copolymer formed is able to solubilize non polar material. Alittle electrolytes added in the copolymer solution can increase the value of critical aggregation concentration( ρac ) and micropolarity. But with the increase of the concentration of electrolytes, the value of ρac and micropolarity will decrease. When there is NaCl with fixed concentration in the systems, the process of the MLCs loosening is relaxed because of the charge-screening. In the systems with fixed CaCl2 concentration, Ca 2+ induced the cross-link of -COO-groups, so the interface between the MLCs and the water is not obvious and the big MLCs is formed between the clusters.

Key words: Copolymer, Micelle like clusters(MLCs), Fluorescence probe, Micropolarity

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