Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (2): 361.

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Effect of Partly Hydrolyzed Polyacrylamide on the Interfacial Dilational Properties of Alkyl Benzene Sulfonate

DOU Li-Xia1*, CHENG Jian-Bo2   

  1. 1. Geological Research Institute of Shengli Oilfield Co.Ltd, SINOPEC, Dongying 257015, China;
    2. Science and Engineering College of Chemistry and Biology, Yantai University, Yantai 264005, China
  • Received:2009-03-27 Online:2010-02-10 Published:2010-02-10
  • Contact: DOU Li-Xia. E-mail: eorlab@hotmail.com
  • Supported by:

    国家科技重大专项项目(批准号: 2008ZX05011)资助.

Abstract:

The dilational viscoelastic properties of partly hydrolyzed polyacrylamide and alkyl benzene sulfonate in the absence or presence of electrolyte were investigated at the decane water interface by means of longitudinal method and the interfacial tension relaxation method. At low surfactant concentration, the addition of polymer could sharply decrease the dilational elasticity, while it may enhance the dilational elasticity at higher surfactant concentration. Addition of electrolyte possibly compresses the double layer, which leads to a higher dilational elasticity. On the other hand, it also possibly speeds up molecular exchange between the bulk and interface, which results in decreasing the dilational elasticity at low frequency.

Key words: Dilational rheology; Partly hydrolyzed polyacrylamide; Alkyl benzene sulfonate; Electrolyte solution

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