| Gemini表面活性剂在气/液界面上的微区形貌随表面压的变化 |
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| 引用本文： | 陈启斌 董亚明 刘洪来 胡英. Gemini表面活性剂在气/液界面上的微区形貌随表面压的变化[J]. 医学教育探索, 2004, 0(6): 665-668 |
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| 作者姓名： | 陈启斌 董亚明 刘洪来 胡英 |
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| 作者单位： | 华东理工大学化学系国家重点化学工程联合实验室，华东理工大学化学系国家重点化学工程联合实验室，华东理工大学化学系国家重点化学工程联合实验室，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，上海200237，上海200237，上海200237 |
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| 基金项目： | 国家自然科学基金(20025618，20236010)，上海市教委资助项目 |
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| 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／液界面上的表面压一分子面积的等温线。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／L NaBr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。
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| 关 键 词： | Gemini表面活性剂 单分子膜 微区形貌 Brewster角显微镜 |
Variation of Domain Morphologies Formed by Gemini Surfactant with Surface Pressures at Air/Liquid Interface |
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| CH EN Qi-bin,DONG Ya-ming,L IU H ong-lai,H U Ying. Variation of Domain Morphologies Formed by Gemini Surfactant with Surface Pressures at Air/Liquid Interface[J]. Researches in Medical Education, 2004, 0(6): 665-668 |
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| Authors: | CH EN Qi-bin DONG Ya-ming L IU H ong-lai H U Ying |
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| Abstract: | 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. |
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| Keywords: | Gemini surfactant monolayer domain morphology Brewster angle microscope |
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