高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (4): 787.

• 研究快报 • 上一篇    下一篇

PSS/PDDA自组装膜形成过程中的临界浓度效应

陈幼芳1, 钱锦文2, 杨平2, 林贤福1   

  1. 1. 浙江大学化学系;
    2. 浙江大学高分子科学系, 杭州 310027
  • 收稿日期:2004-11-30 出版日期:2005-04-10 发布日期:2005-04-10
  • 通讯作者: 钱锦文(1946年生),男,教授,博士生导师,从事于高分子溶液与分离膜研究.E-mail:qianjw@zju.edu.cn E-mail:qianjw@zju.edu.cn
  • 基金资助:

    国家重点基础研究“九七三”计划专项基金(批准号:9732003C8615700);国家自然科学基金(批准号:20376068)资助.

Critical Concentration Effect During the Preparation of Self-assembled PSS/PDDA Multilayer Films

CHEN You-Fang1, QIAN Jin-Wen2, YANG Ping2, LIN Xian-Fu1   

  1. 1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China;
    2. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2004-11-30 Online:2005-04-10 Published:2005-04-10

PDF (PC)

被引次数

16

关键词: 自组装膜, 聚电解质, 高分子浓度, 临界浓度

Abstract: UV absorbance(A) of self-assembled films of poly(dimethyldiallyl ammonium chloride)(PDDA) and poly(styrene sulfonate)(PSS) with various concentrations of polyelectrolyte(cP) at different concentrations of sodium chloride was investigated. It was found that the A～cP curves display a discontinuous phenomenon. And the turning point concentration, at which the A～cP curve starts to display a discontinuous phenomenon, is in good agreement with the critical concentration c of PSS or PDDA polyelectrolyte solutions. The results above attribute to the change of chain shape of polyelectrolytes in solutions caused by cP and c(NaCl). Thus, it is inferred that chain shape of polyelectrolyte in solutions affects the thickness of PSS/PDDA multilayer films.

Key words: Self-assembled film, Polyelectrolyte, Polymer concentration, Critical concentration.

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