物理化学学报 >> 1996, Vol. 12 >> Issue (10): 885-891.doi: 10.3866/PKU.WHXB19961006

研究论文 上一篇    下一篇

SDS/苯甲醇/H2O体系的相行为与结构

沈明,刘天晴,郭荣   

  1. 扬州大学师范学院化学系，扬州 225002
  • 收稿日期:1996-04-18 修回日期:1996-05-30 发布日期:1996-10-15
  • 通讯作者: 郭荣

The Phase Behavior and Structure of SDS/BA/H2O System

Shen Ming,Liu Tian-Qing,Guo Rong   

  1. Department of Chemistry,Teacher's College,Yangzhou University,Jiangsu,Yangzhou 225002
  • Received:1996-04-18 Revised:1996-05-30 Published:1996-10-15
  • Contact: Guo Rong

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摘要：

SDS／苯甲醇／H2O体系能生成胶束、微乳液、层状液晶、六角状液晶等分子有序组合作，它们之间转换关系可以从凝聚能理论得到解释．苯甲醇在O／W微乳液中的分配系数K＝168，表明绝大多数苯甲醇被增溶于SDS胶束相内．随重量比本甲醇／SDS增加，层状液晶中的d0 值几乎不变，溶剂渗透率略有增加，六角状液晶中圆柱缔合体的半径r值几乎不变，溶剂渗透率增加．

关键词: 表面活性剂, 胶束, 微乳液, 层状液晶, 六角状液晶

Abstract:

Micelle, microemulsion, lamellar liquid crystal and hexagonal liquid crystal can be formed in SDS/BA/H2O system, and the exchanging between them can be explained by the R ratio. The value of distribution coefficient of BA in O/W microemulsion, K=168, shows that most of BA molecules should be solubilized in the SDS micelle phase. With increasing the weight ratio of BA/SDS, d0 values have almost no change and the penetration of solvent, α, slightly increases in the lamellar liquid crystal, and the radius r in hexagonal liquid crystal is almost unchanged and the penetrations of solvent, α, increase in hexagonal liquid crystal.

Key words: Surfactant, Micelle, Microemulsion, Lamellar liquid crystal, Hexagonal liquid crystal