| 二元表面活性剂溶液表面吸附层分子交换能的研究 |
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| 引用本文： | 王正武,李干佐,牟建海,关大任.二元表面活性剂溶液表面吸附层分子交换能的研究[J].高等学校化学学报,2001,22(7):1225-1227. |
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| 作者姓名： | 王正武 李干佐 牟建海 关大任 |
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| 作者单位： | 1. 山东大学胶体与界面化学教育部重点实验室;
2. 山东大学理论化学研究所, 济南 250100 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 990 90 0 6 )，教育部重点实验室访问学者基金资助 |
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| 摘 要： | 由于分子间存在的相互作用，表面活性剂混合体系通常比单一表面活性剂更能降低溶液的表面能，该现象称为协同效应或复配增效^1,2]。由于多元体系组成复杂，迄今仅能用正规溶液理论导出的非理想性参数（又称分子相互作用参数βs）来表征^3-5]，βs愈负，复配增效效果愈好。但如何从分子水平去理解βs至今尚不清楚。本文用二维晶格模型得出协同效应可用溶液表面层的分子交换能来描述，并推导出由βs计算该交换能的相应公式。
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| 关 键 词： | 表面活性剂 分子交换能 分子相互作用参数(&beta s) |
| 文章编号： | 0251-0790(2001)07-1225-03 |
| 收稿时间： | 2000-05-17 |
Studies on Molecule-Exchanging Energy on Surface of Binary Surfactant Aqueous Solutions with Dimensional Crystal Model |
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| WANG Zheng Wu ,LI Gan Zuo ,MU Jian Hai ,GUAN Da Ren.Studies on Molecule-Exchanging Energy on Surface of Binary Surfactant Aqueous Solutions with Dimensional Crystal Model[J].Chemical Research In Chinese Universities,2001,22(7):1225-1227. |
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| Authors: | WANG Zheng Wu LI Gan Zuo MU Jian Hai GUAN Da Ren |
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| Institution: | 1. Key Laboratory of Colloid and Interface Chemistry for State Educational Ministry;
2. Institute of Theoretical Chemistry, Shandong University, Jinan 250100, China |
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| Abstract: | The relationship between activity coefficient and molecule-exchanging energy of surfactants in the surface monolayer of binary surfactant aqueous solutions has been deduced with the help of two-dimensional crystal model. The results show the relationship between the synergism of surfactants and the molecule-exchanging energy. Through the parameter of molecule interaction( βs), the value of the molecule-exchanging energy can be obtained by equation ε =2.3×10-24 βs T that has been examined with six typical surfactant systems. |
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| Keywords: | Surfactant Molecule exchanging energy Parameter of molecule interaction( βs) |
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