文献类型：期刊文献

中文题名：Gemini表面活性剂在气/液界面上的微区形貌随表面压的变化

英文题名：Variation of Domain Morphologies Formed by Gemini Surfactant with Surface Pressures at Air/Liquid Interface

作者：陈启斌[1];董亚明[1];刘洪来[1];胡英[1]

机构：[1]华东理工大学化学系国家重点化学工程联合实验室,上海200237

年份：2004

卷号：30

期号：6

起止页码：665

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：2005068830083);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);上海市教委资助项目

语种：中文

中文关键词：Gemini表面活性剂;单分子膜;微区形貌;Brewster角显微镜

外文关键词：Gemini surfactant; monolayer; domain morphology; Brewster angle microscope

摘要：测定了Gemini表面活性剂在pH值为10.86,NaBr浓度为1.0mol/L的溶液气/液界面上的表面压-分子面积的等温线。用自制的Brewster角显微镜(BAM)观察了由Gemini表面活性剂在界面上所形成单分子膜的微区形貌随表面压的变化。结果表明:当pH值为10.86时,Gemini表面活性剂在1.0mol/LNaBr溶液的气/液界面上生成了凝聚态的单分子膜;当表面压较低时,观察到在界面上形成了同心圆结构;随着表面压的增加,这些同心圆可发生聚并而形成多中心结构。
The surface pressure-area per molecule isotherm of Gemini surfactant, propdiyl-1,3-bis (dimethyloctadecylammonium bromide)-PBDOAB, was measured at an air/liquid interface of 1.0 mol/L aqueous NaBr solution and pH=10.86. Variation of domain morphologies formed by Gemini surfactant with surface pressures at the air/liquid was observed via home-built Brewster angle microscope (BAM). (Results) show that Gemini surfactant PBDOAB forms condensed monolayer at interface and that the concentric tori can be observed at lower surface pressures, while these structures can coalesce mutually and form (multi-)centered structures, as surface pressures increase.