文献类型：期刊文献

中文题名：偶联表面活性剂在气/液界面上的区域形貌

英文题名：Observation of the Domain Morphology of Gemini Surfactant at an Air/Liquid Interface Using BAM

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

年份：2003

卷号：19

期号：11

起止页码：1069

中文期刊名：物理化学学报

外文期刊名：Acta Physico-Chimica Sinica

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

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：偶联表面活性剂;气/液界面;区域形貌;Brewster角显微镜;单分子层;表面张力

外文关键词：Gemini surfactant; interface; Brewster angle microscope (BAM); domain morphology; monolayer

摘要：测定了偶联表面活性剂propilidene-1,3-bis(dimethyloctadecylammonium bromide)(PBDOAB)在0.005 mol·L^(-1)NaBr溶液气/液界面上的分子面积和表面压-分子面积等温线。用自制的Brewster角显微镜观察了PBDOAB在该溶液的气/液界面上的区域结构。结果表明,PBDOAB在0.005 mol·L^(-1)NaBr溶液的气/液界面上生成了凝聚态的单分子膜;观察到在界面上形成了环形的区域结构;在环形结构内的分子取向呈中心对称。
The surface pressure-area per molecule isotherm of Gemini surfactant [propilidene-1, 3-bis (dimethyloctadecylammonium bromide), PBDOAB] at an air/liquid interface of 0.005 mol . L-1 aqueous NaBr solution has been measured. The cross-sectional area of PBDOAB at the air/liquid interface has been obtained. Domain morphology formed by PBDOAB at the air/liquid has been investigated via BAM. Results show that PBDOAB forms condensed monolayer; that the circular domain morphology has been observed and that in the circular domains the molecular orientations of the PBDOAB is of central symmetry at the air/liquid interface of the aqueous NaBr solutions. It is proved that the chemical structure of Gemini surfactants strongly influences their properties at the air/liquid interface.