Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (02): 247-252.doi: 10.3866/PKU.WHXB20070221

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Effect of Oxyethylene Numbers on Surface Dilational Properties of Octylphenol polyoxyethylene ethers

ZHANG Chun-Rong;LI Zhen-Quan;LUO Lan;ZHANG Lu;SONG Xin-Wang;CAO Xu-Long;ZHAO Sui;YU Jia-Yong   

  1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China;Geological Research Institute of Shengli Oilfield Co. Ltd, SINOPEC, Dongying 257015, Shandong Province, P. R. China
  • Received:2006-07-06 Revised:2006-09-08 Published:2007-02-01
  • Contact: ZHANG Lu E-mail:luyiqiao@hotmail.com

Abstract: The surface dilational viscoelasticities of octylphenol polyoxyethylene ethers solutions, TX-100(10 oxyethylene (EO), TX-102(12EO) and TX-165(16EO), were investigated by Langmuir trough method. The influences of polyoxyethylene numbers on surface dilational properties were expounded. It showed that the increase of polyoxyethylene numbers resulted in the increase of surface dilational modulus and elasticity, which may be attributed to the slower relaxation processes caused by the “flat-configuration” of the longer polyoxyethylene chain at the surface.

Key words: Octylphenol polyoxyethylene ether, Surface, Dilational modulus, Phase angle, Interfacial tension relaxation