文献类型：期刊文献

中文题名：正，负离子混合表面活性剂双水相系统相图及微观结构研究

英文题名：Study on the Phase Diagrams of Aqueous Two-Phase and Microstructure of Cationic-Anionic Mixed Surfactants

作者：滕弘霓[1];陈莉[1];刘洪来[1];胡英[1]

机构：[1]华东理工大学化学系,

年份：2001

卷号：59

期号：3

起止页码：383

中文期刊名：化学学报

外文期刊名：Acta Chimica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金，教育部高校骨干教师资助计划

语种：中文

中文关键词：双水相;微观结构;混合表面活性剂;十二烷基硫酸钠;十六烷基三甲基溴化胺;相图

外文关键词：aqueous two-phase; microstructure; mixed surfactant; sodium dodecyl sulfonate; cetyl trimethyl amine bromine

摘要：研究了水/十二烷基硫酸钠(SDS)/十六烷基三甲基溴化胺(CTAB)三元相图上的双水相区及其相关性质.研究发现：该系统在两个非常狭窄的区域能够形成双水相，SDS过量的双水相区具有类似浊点的性质，上相有明显的偏光现象，而CTAB过量的双水相区则具有Krafft点性质，上相偏光现象较弱.冷冻蚀刻显微镜观察双水相的微观结构表明，上相为层状结构，下相一般为球状结构.双水相的体积比对正、负离子表面活性剂比例的微小变化非常敏感.
The aqueous two-phase regions and the relevant properties of water/sodium dodecyl sulfonate (SDS)/cetyl trimethyl amine bromine(CTAB) system have been determined. It is shown that there are two aqueous two-phase in two regions with excess SDS or CTAB. The one with excess SDS has cloud point. Obvious phenomena of polarized light can be detected in the upper phase. Another aqueous two-phase region with excess CTAB has the property of Krafft point and the phenomena of polarized light isn't remarkable in the upper phase. The freezing etch TEM photograph showed that the structure of upper phase is lamellar and the lower phase is sphere-like. The volume ratio of two phases is sensitive to minor variations of the ratio between anionic surfactant and cationic surfactant.