物理化学学报 >> 1998, Vol. 14 >> Issue (03): 261-266.doi: 10.3866/PKU.WHXB19980314

研究简报 上一篇    下一篇

C7FNa-Et4NBr混合水溶液的表面吸附与胶团形成

贺绍光, 赵国玺   

  1. 四川师范大学化学系,成都 610066|北京大学物理化学研究所,北京 100871
  • 收稿日期:1997-06-27 修回日期:1997-09-16 发布日期:1998-03-15
  • 通讯作者: 赵国玺

Surface Adsorption and Micelle Formation of the Aqueous Mixture of C7FNa-Et4NBr

He Shao-Guang, Zhao Guo-Xi   

  1. Department of Chemistry,Sichuan Normal University,Chengdu 610066|Institute of Physical Chemistry,Peking University,Beijing 100871
  • Received:1997-06-27 Revised:1997-09-16 Published:1998-03-15
  • Contact: Zhao Guo-Xi

关键词: C7FNa-Et4NBr混合水溶液, 表面吸附, 胶团形成热力学

Abstract:

The surface adsorption and micellization of the mixed aqueous solution of C7FNa-Et4NBr system have been studied by the determination and analysis of surface tension-concentration relation. The results show that (1) the surface activity of C7FNa could be greatly enhanced due to the addition of Et4NBr(in comparison with the addition of inorganic salt, NH4Cl)By analyzing the results of surface adsorption data and the characteristics of relevant components, the rational explanations for this phenomenon have been made;(2)the thermodynamic functions for the mixed system,ΔG?,ΔH? and ΔS? have been obtained by utilizing the mass action law model of micellization; the rules of these quantities are quite similar to the case of a common single surfactant.

Key words: Aqueous C7FNa-Et4NBr mixture, Surface adsorption, Thermodynamics of micellization