物理化学学报 >> 2008, Vol. 24 >> Issue (12): 2309-2313.doi: 10.3866/PKU.WHXB20081227

研究简报 上一篇    下一篇

乙醇/水混合溶剂中Gemini表面活性剂的表面性质

胡尚林, 卢婷, 兰玉茹, 黄建滨   

  1. 北京大学化学与分子工程学院, 北京 100871; 龙岩学院化学与材料学院, 福建 龙岩 364000
  • 收稿日期:2008-07-07 修回日期:2008-09-19 发布日期:2008-12-04
  • 通讯作者: 黄建滨 E-mail:jbhuang@pku.edu.cn

Surface Properties of Gemini Surfactants in Ethanol-Water Mixtures

HU Shang-Lin, LU Ting, LAN Yu-Ru, HUANG Jian-Bin   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China; College of Chemistry and Material, Longyan University, Longyan 364000, Fujian Province, P. R. China
  • Received:2008-07-07 Revised:2008-09-19 Published:2008-12-04
  • Contact: HUANG Jian-Bin E-mail:jbhuang@pku.edu.cn

PDF

2164

赞

摘要： 通过对Gemini表面活性剂12-s-12 (Et)(s=4, 6, 8, 10, 12)体系在乙醇/水混合溶剂中的表面张力曲线的测定, 对该体系的表面性质进行了研究. 发现随乙醇/水比例变化, Gemini各种表面化学性质, 如临界胶束浓度(cmc)、表面张力(γcmc)、饱和吸附量(Γmax)和最小分子占有面积(Amin)等的变化规律. 拓展了Gemini表面活性剂在混合溶剂中表面吸附的研究.

关键词: Gemini表面活性剂, 表面性质, 乙醇/水混合溶剂

Abstract: Surface properties of Gemini surfactants 12-s-12 (Et)(s=4, 6, 8, 10, 12) in ethanol/water solvents were studied by measurement of surface tension curves. Values of the critical micelle concentration (cmc), surface tension at the cmc (γcmc), saturation adsorption (Γmax) and minimumarea per surfactant molecule (Amin) for Gemini surfactants in various ethanol/water mixture ratios were determined. The effect of ethanol addition on the cmc and γcmc for this series of surfactant systems is discussed.

Key words: Gemini surfactants, Surface properties, Ethanol-water mixed solvent