Dynamic surface tension and adsorption kinetics of a siloxane dicephalic surfactant

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• 作者：Dianlong Zhang (1) (2)
  Wenshan Qu (2)
  Zhe Li (1)
  
  1. College of Chemistry and Chemical Engineering ; Taiyuan University of Technology ; Taiyuan Shanxi ; 030024 ; P. R. China
  2. Department of Chemistry ; Shanxi Datong University ; Datong Shanxi ; 030007 ; P. R. China
  
• 关键词：siloxane ; kinetics ; adsorption ; dynamic surface tension
• 刊名：Russian Journal of Physical Chemistry A, Focus on Chemistry
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：89
• 期：2
• 页码：297-301
• 全文大小：402 KB
• 参考文献：1. T. Yoshimura, S. Umezawa, A. Fujino, K. Torigoe, K. Sakai, H. Sakai, M. Abe, and K. Esumi, J. Oleo Sci. 62, 353 (2013). CrossRef
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1531-863X

文摘

The dynamic surface tension (DST) of a siloxane dicephalic surfactant was measured by using the maximum bubble pressure method. By using the classical Ward and Tordai equation, the diffusion coefficient for each bulk surfactant concentration was calculated. The results show that at the initial adsorption stage and at the end of the adsorption process, the dynamic surface tension data were all consistent with this diffusion-controlled mechanism. Their diffusion coefficient was slightly lower than that for conventional hydrocarbon surfactants.