| 偶联表面活性剂在气/液界面上的区域形貌 |
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| 引用本文： | 陈启斌,董亚明,刘洪来,胡英. 偶联表面活性剂在气/液界面上的区域形貌[J]. 物理化学学报, 2003, 19(11): 1069-1072. DOI: 10.3866/PKU.WHXB20031117 |
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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： | Department of Chemistry, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 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.
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| 关 键 词： | 偶联表面活性剂 界面 Brewster角显微镜(BAM) 区域形貌 单分子层 |
| 收稿时间： | 2003-04-29 |
| 修稿时间： | 2003-04-29 |
Observation of the Domain Morphology of Gemini Surfactant at an Air/Liquid Interface Using BAM |
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| Chen Qi-Bin Dong Ya-Ming Liu Hong-Lai Hu Ying. Observation of the Domain Morphology of Gemini Surfactant at an Air/Liquid Interface Using BAM[J]. Acta Physico-Chimica Sinica, 2003, 19(11): 1069-1072. DOI: 10.3866/PKU.WHXB20031117 |
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| Authors: | Chen Qi-Bin Dong Ya-Ming Liu Hong-Lai Hu Ying |
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| Affiliation: | Department of Chemistry, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237 |
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| Abstract: | 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. |
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| Keywords: | Gemini surfactant Interface Brewster angle microscope (BAM) Domain morphology Monolayer |
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