胶束溶液中双连续结构性质的探讨

BICONTINUOUS STRUCTURE IN MICELLE SOLUTION

十二烷基硫酸钠（ＳＤＳ），醇（正丙醇、正丁醇、正戊醇、正己醇）和水三组分体系的相图测定表明两种情况：一种是从ｏ／ｗ型向ｗ／ｏ型转变是连续变化；另一种是从ｏ／ｗ型向ｗ／ｏ型转变是通过层状液晶，即两种结构的胶束是互不相连的．利用电导测量法，证明在第一种类型胶束区域内，从ｏ／ｗ型向ｗ／ｏ型转变的中间连续区域具有双连续结构．相图的胶束区域可分为ｏ／ｗ、ｗ／ｏ和双连续（Ｂ．Ｃ）三个小区域．但是这种双连续结构与微乳液中双连续结构不同，其特性折射常数和自扩散系数测量表明，胶束的双连续结构不遵守微乳液双连续结构的特性折射常数与自扩散系数规律．

The micelle regions are determined in ternary SDS-alcohol-water system phase diagrams at 25 ℃ by water titration of mixtures of the remaining components notating points of turbidity and clearity.Two style micelles have been gotten in the phase digrams: (1)A region is the isotropic phase, extending from the water corner to the alcohol corner, i. e. from w/o style to o/w style by continuing change. (2)A mesomorphic phase between the w/o style region and o/w region has been left out for simplicity.The technique of conductivity measurement is used for the nature of the first style micelle region,and it enable also quantitatively to delimit a boundary of the following structure of this micelle.It is expected that o/w type micelle ought to disply a fairly high electrical conductivity at high water volume fraction,in contrast with w/o ones which should be poorly conducting at high oil volume fraction. At middle region of the isotropic phases the present investigation is bicontinuous structure micelle. But spine properties such as the characteristic parameter of refraction and self-diffusion coefficients for these bicontinuous micelle are not consistent with that for middle phase microemulsions.