Acta Phys. -Chim. Sin. ›› 2001, Vol. 17 ›› Issue (01): 62-65.doi: 10.3866/PKU.WHXB20010113

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Effect of Hydrophilic-Lipophilic Ability of Surfactant on Dynamic Interfacial Tensions

Zhang Lu;Luo Lan;Zhao Sui;Yu Jia-Yong   

  1. Institute of Photographic Chemistry,Chinese Academy of Sciences,Beijing 100101
  • Received:2000-03-06 Revised:2000-05-30 Published:2001-01-15
  • Contact: Zhang Lu

Abstract: The dynamic interfacial tensions between hydrocarbons and solutions of surfactants having different hydrophiliclipophilic ability are measured.The effects of ionic strength and alkyl chain carbonnumber on dynamic interfacial tensions are also studied.It is found that adsorptiondesorption barriers are connected with the hydrophiliclipophilic ability of surfactants.There exists a large or small adsorptiondesorption barrier to the transfer of surfactant having strong hydrophilic or lipophilic ability from water to oil.The influences of ionic strength and alkyl chain carbon-number on adsorptiondesorption barriers are discussed.

Key words: Dynamic interfacial tension, Adsorption-desorption barrier,  Hydrophilic-lipophilic ability