Effect of Interactions Among Flooding Chemicals on Interfacial Properties of Adsorption Film

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (12): 2445.

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Effect of Interactions Among Flooding Chemicals on Interfacial Properties of Adsorption Film

ZHU Yang-Wen^1,2, SONG Xin-Wang², LUO Lan³, ZHANG Lu^3*, ZHAO Sui³, YU Jia-Yong³

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
2. Geological and Scientific Research Institute, Shengli Oilfield Co., Ltd., SINOPEC, Dongying 257015, China;
3. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Received:2010-05-07 Revised:2010-06-21 Online:2010-12-10 Published:2010-12-06
Contact: ZHANG Lu E-mail:luzhang523@hotmail.com
About author:张路, 男, 博士, 副研究员, 主要从事胶体与界面化学的研究.
Supported by:
国家科技重大专项基金(批准号: 2008ZX05011)和国家“八六三”计划项目(批准号: 2008AA092801)资助.

Abstract

Abstract: The dilational viscoelastic properties of Gemini surfactant C12COONa-p-C9SO3Na, partly hydrolyzed polyacrylamide, hydrophobically modified polyacrylamide were investigated at the decane–water interface by means of interfacial tension relaxation. The effects of different type electrolytes and ionic strength on interfacial dilational properties were exploited. The dilational elasticity and dilational viscosity are calculated at different frequencies and the relaxation processes were discussed by plotting cole-cole curves. The experimental results show that in-film molecular reorientation process and molecular diffusion-exchange between the interface and the bulk are two main processes controlling the nature of film. The increase of surfactant concentration will enhance molecular reorientation process, while molecular diffusion-exchange process will dominate adsorption film at low frequency. The influences on dilational properties of surfactant film depend on structure of polymer, ionic strength and ionic type.

Key words: Dilational elasiticity, Dilational viscosity, Gemini surfactant, Relaxation process, Electrolyte

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Effect of Interactions Among Flooding Chemicals on Interfacial Properties of Adsorption Film

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