高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (10): 1915.

• 研究论文 • 上一篇    下一篇

烷基聚葡糖苷溶液的表面吸附平衡与动力学

柴金岭1,2, 徐军3, 李干佐1, 张高勇1, 李英1, 陈文君1   

  1. 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
  • 收稿日期:2001-10-18 出版日期:2002-10-24 发布日期:2002-10-24
  • 通讯作者: 李干佐(1938年出生),男,教授,博士生导师,从事表面活性剂物理化学研究.E-mail:coliw@sdu.edu.cn E-mail:coliw@sdu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29903006,29973023)资助

Adsorption Equilibrium and Kinetics of Alkyl Polyglucoside on the Air/Water Interface

CHAI Jin-Ling1,2, XU Jun3, LI Gan-Zuo1, ZHANG Gao-Yong1, LI Ying1, CHEN Wen-Jun1   

  1. 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
  • Received:2001-10-18 Online:2002-10-24 Published:2002-10-24

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被引次数

45

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.

关键词: 动态表面张力, 吸附平衡与动力学, 烷基聚葡糖苷

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.

Key words: Dynamic surface tension, Adsorption equilibrium and kinetics, Alkyl polyglucoside

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