| 烷基聚葡糖苷溶液的表面吸附平衡与动力学 |
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| 引用本文： | 柴金岭,徐军,李干佐,张高勇,李英,陈文君. 烷基聚葡糖苷溶液的表面吸附平衡与动力学[J]. 高等学校化学学报, 2002, 23(10): 1915-1920 |
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| 作者姓名： | 柴金岭 徐军 李干佐 张高勇 李英 陈文君 |
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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, 济南 250100;2. 山东省师范大学化学系, 济南 250014;3. 中国石油化工集团金陵石油化工研究院, 南京 210046 |
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| 基金项目： | 国家自然科学基金(批准号 :2 990 3 0 0 6,2 9973 0 2 3 )资助 |
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| 摘 要： | 用吊片法和气泡最大压力法分别测定了烷基聚葡糖苷(APG)C9.6G1.3水溶液的平衡和动态表面张力,研究了APG水溶液表面的吸附平衡、动力学及其影响因素.测得其cmc(临界胶束浓度)为0.032g/L.吸附过程由初始的扩散控制转变到势垒控制,吸附势垒为4～7kJ/mol.温度升高,平衡和动态表面张力均减小,吸附量增加;加入无机盐,平衡和动态表面张力增大,吸附量亦增加;醇类的吸附使动态表面张力下降速率加快,表明APG与醇分子间有协同吸附作用.
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| 关 键 词： | 动态表面张力 吸附平衡与动力学 烷基聚葡糖苷 |
| 文章编号： | 0251-0790(2002)10-1915-06 |
| 收稿时间： | 2001-10-18 |
| 修稿时间： | 2001-10-18 |
Adsorption Equilibrium and Kinetics of Alkyl Polyglucoside on the Air/Water Interface |
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| CHAI Jin-Ling ,,XU Jun ,LI Gan-Zuo ,ZHANG Gao-Yong ,LI Ying ,CHEN Wen-Jun. Adsorption Equilibrium and Kinetics of Alkyl Polyglucoside on the Air/Water Interface[J]. Chemical Research In Chinese Universities, 2002, 23(10): 1915-1920 |
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| Authors: | CHAI Jin-Ling XU Jun LI Gan-Zuo ZHANG Gao-Yong LI Ying CHEN Wen-Jun |
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| Affiliation: | 1. Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan 250100, China;2. Department of Chemistry, Shandong Normal University, Jinan 250014, China;3. Jinling Research Institute of Petrochemical Industry, Nanjing 210046, China |
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| Abstract: | The air-solution equilibrium(γe) and dynamic surface tensions were measured by Wilhelmy method and maximum bubble pressure method(MBPM), respectively, of alkyl polyglucoside(APG) aqueous solution C9.6G1.3. The adsorption equilibrium and kinetics of APG on the air-solution interface were studied. The CMC of APG was determined to be 0.032 g/L. The above results show that at the start, the adsorption process is controlled by a diffusion step; Then it changes to a barrier control mechanism with a adsorption barrier between 4 and 7 kJ/mol. The effects of temperature, inorganic salts and alcohols on the adsorption equilibrium and kinetics were also discussed. |
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| Keywords: | Dynamic surface tension Adsorption equilibrium and kinetics Alkyl polyglucoside |
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