高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (2): 266.

• 论文 • 上一篇    下一篇

CTAB胶束微环境中BY增溶位置的探讨

张韫宏1, 梁映秋2   

  1. 1. 厦门大学化学系, 厦门, 361005;
    2. 南京大学化学系
  • 收稿日期:1993-04-15 修回日期:1993-11-28 出版日期:1994-02-24 发布日期:1994-02-24
  • 通讯作者: 张祖宏,男,29岁,博士,讲师.
  • 作者简介:张祖宏,男,29岁,博士,讲师.

Studies on the Solubilizing Location of Brilliant Yellow in CTAB Micellar Solution

ZHANG Yun-Hong1, LIANG Ying-Qiu2   

  1. 1. Department of Chemistry, Xiamen Universtty, Xiamen, 361005;
    2. Department of Chemistry, Nanjng University
  • Received:1993-04-15 Revised:1993-11-28 Online:1994-02-24 Published:1994-02-24

摘要: 本文用UV吸收光谱对(BY+CTAB)体系胶束化过程中预胶束的形成,以及预胶束向胶束的转变过程进行了分析。采用Gouy-Chapman模型,建立了CTAB胶束微环境中BY表现解离常数与胶束结构参数之间的定量关系,根据水溶液和各种盐浓度条件下CTAB胶束溶液中酸碱解离常数的测量,分析了BY在CTAB胶束扩散层中的增溶位置,讨论了CTAB胶束对BY选择性吸附的特性。

关键词: 胶束, UV吸收光谱, 溴化十六烷基三甲铵, 亮黄

Abstract: In this paper, the formation of the premicella and the transformation of the premicella to micella for brilliant yellow(BY) in the water solution of cetytrimethylammonium bromide (CTAB)were studied with UVabsorption spectra.With the Gouy-Chapman model, the relation between the change of BY's apparent dissociation constant(△PKm) and the micellar structure parameters was set up.According to the dissociation constants of BYmeasured in water solution and in CTABmicellar solutions with different concentrations of salt,the distances between BYand the surface of the micella were determined, which were used to demonstrate the solubilizing location of BYin CTAB micella and to characterize the property of CTAB micella adsorbing BY anions.

Key words: Micelle, UV-visible absorption spectra, cetyltrimethylammonium bromide, Brilliant yellow

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