物理化学学报 >> 1990, Vol. 6 >> Issue (04): 465-469.doi: 10.3866/PKU.WHXB19900414

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SDS H2O-C4H9OH体系层状液晶的结构及增溶作用

戴乐蓉; 郭荣   

  1. 北京大学物理化学研究所；扬州师范学院化学系
  • 收稿日期:1989-08-15 修回日期:1989-12-04 发布日期:1990-08-15
  • 通讯作者: 戴乐蓉

The Structure and Solubilization of Lamellar Liquid Crystal in SDS-Water-Butanol System

Dai Le-Rong; Guo Rong   

  1. Institute of Physical Chemistry, Peking University; Department of Chemistry, Yangzhou Teachers College
  • Received:1989-08-15 Revised:1989-12-04 Published:1990-08-15
  • Contact: Dai Le-Rong

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摘要： 表面活性剂溶液中关于胶束和微乳的形成及性质已有大量研究~[1]. 近年来表面活性剂分子所形成的层状液晶的结构和它的增溶. 渗透、扩散作用的研究引起了广泛的关注~[2,3,4]. 它的性质和结构的研究在实际与理论上皆有很大的意义, 特别是在生物体系中显得十分重要. 本工作利用小角度X射线衍射研究了SDS(sodium dode-cyl sulfate)-H_2O-C_4H_9OH体系层状液晶的结构及增溶C_7H_(16)后对结构的影响, 并对本体系中两亲分子在液晶中的排列和增溶的机制提出相应的看法。

Abstract: In this work we have studied the phase diagrams of SDS-Water-Butanol and SDS-Water-Butanol-Heptane system. The structure of lamellar liquid crystal in both systems have studied by low angle X-ray diffraction. The result showed that the thickness of amphiphile bilayer of lamellar liquid crystal in SDS-Water-Butanol system was 2.42 nm, it did not vary with SDS/Butanol ratio. When heptane was solubilized in the lamellar liquid crystal, the solubilization caused the thickness of amphiphile bilayer to increase. While the water penetrated into the amphiphile bilayer, the thickness decreased accordingly.