文献类型：期刊文献

中文题名：阳离子型偶联表面活性剂溶液的表面张力和电导率

英文题名：Measurement of Surface Tension and Electrical Conductivity of Cationic Gemini Surfactants

作者：陈启斌[1];韦园红[1];施云海[1];刘洪来[1];胡英[1]

机构：[1]华东理工大学化学系,上海200237

年份：2003

卷号：29

期号：1

起止页码：33

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2003187454464);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(20025618;20236010);教育部青年骨干教师基金;上海市教委资助项目

语种：中文

中文关键词：阳离子型偶联表面活化剂;季胺盐型偶联表面活性剂;表面张力;电导率;临界胶束浓度;胶束电离度

外文关键词：Gemini surfactant; surface tension; electrical conductivity; critical micelle concentration

摘要：合成了3种季胺盐型偶联表面活性剂C12H25N(CH3)2—CnH2n—(CH3)2NC12H25,2Br-1(n=3,4,6),测定了不同浓度水溶液的表面张力和电导率,并得到临界胶束浓度(CMC)、偶联表面活性剂在气-液界面上的吸附量、单个分子的面积和胶束电离度。结果表明:与相应的单头基单尾链表面活性剂相比,偶联表面活性剂具有很低的CMC和很强的表面活性,联接基团对其性能有较大影响。
Three kinds of cationic Gemini surfactants (C12H25N(CH3)2—CnH2n—(CH3)2NC12H25,2Br-1)(n=3,4,6) have been synthesized. Surface tension and electrical conductivity of their aqueous solutions at different concentration have been measured. From these experimental data, the critical micelle concentration (CMC), excess adsorption amount at vaporliquid interface, the area per molecule and the degree of ionization of micelle have been obtained. Results show that Gemini surfactants have much lower CMC and stronger surface activity comparing with the corresponding monomeric conventional surfactants. The spacer group has a great influence on the properties of aqueous Gemini surfactants.