物理化学学报 >> 1999, Vol. 15 >> Issue (03): 269-273.doi: 10.3866/PKU.WHXB19990314

研究简报 上一篇    下一篇

CTAB/CnH2n+1OH/H2O体系的热力学和电化学性质

郭荣, 沈明, 刘天晴   

  1. 扬州大学师范学院化学系,扬州 225002
  • 收稿日期:1998-03-16 修回日期:1998-06-01 发布日期:1999-03-15
  • 通讯作者: 郭荣

Thermodynamical and Electrochemical Properties of CTAB/CnH2n+1OH/H2O

Guo Rong, Shen Ming, Liu Tian-Qing   

  1. Department of Chemistry,Teacher's College,Yangzhou University,Yangzhou 225002
  • Received:1998-03-16 Revised:1998-06-01 Published:1999-03-15
  • Contact: Guo Rong

关键词: 胶束, 微乳液, 分配系数, 增容自由能, 第二CMC

Abstract:

Distribution coefficient K of C n H 2 n +1 OH between micellar phase and water phase in CTAB/C n OH/H 2O O/W system increases with the increase of alcohol chain length. The relationship between solubilization Gibbs free energyΔGmΘ(A) of alcohol in CTAB micellar system and alcohol chain length( n C.) is given by an equation,viz: ΔGmΘ(A)  = -6.82-1.175 n C. The measurement of cyclic voltammetry shows that the second cmc of CTAB reduces with the addition of alcohol and the increase of alcohol chain length, which is advantageous to the CTAB micelle sphere to rod transition.

Key words: Micelle, Microemulsion, Distribution coefficient, Solubilization Gibbs free energy, Second CMC