物理化学学报 >> 1997, Vol. 13 >> Issue (05): 401-406.doi: 10.3866/PKU.WHXB19970504

研究论文 上一篇    下一篇

SDS/BA/H2O体系的扩散系数与结构特性

刘天晴,郭荣,于卫里,沈明   

  1. 扬州大学师范学院化学系,扬州 225002
  • 收稿日期:1996-08-26 修回日期:1997-01-18 发布日期:1997-05-15
  • 通讯作者: 郭荣

Diffusion Coefficient and Structure Properties of SDS/BA/H2O System

Liu Tian-Qing,Guo Rong,Yu Wei-Li,Shen Ming   

  1. Department of Chemistry,Techer's College of Yangzhou University,Yangzhou 225002
  • Received:1996-08-26 Revised:1997-01-18 Published:1997-05-15
  • Contact: Guo Rong

摘要:

在无探针条件下,用电化学方法测定了SDS/BA/H2O三组分体系的扩散系数和扩散活化能. 结果表明,L1区域由O/W结构做乳液与油、水观连续结构徽乳液(BI)两个小区域组成,并不是单一的O/W区域. 在O/W区域内,微乳液以液滴状态存在,具有较好的扩散性能和较小的扩散活化能;在BI区域,水与BA同作为连续相与被增溶相存在,缔合体系呈网络结构,扩散性能较低,扩散活化能较大.

关键词: 循环伏安法, 扩散系数, 活化能, 微乳液, 胶束

Abstract:

Micelle diffusion coefficient and diffusion activation energy of SDS/BA/H2O system are determined by electrochemical methods without any probe. The results show that L1 area is not a single O/W microemulsion, it consists of two small regions-O/W microemulsion and oil-water bicontinuous microemulsion,. The microemulsion exists in liquid drop in O/W microemulsion and in net-structure in oil-water bicontinuous microemulsion. The diffusion property is better and diffusion activation energy smaller in the former than in the latter.

Key words: Cyclic voltammogram, Diffustion coefficient, Activation energy, Microemulsion, Micelle