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China Surfactant Detergent & Cosmetics ›› 2015, Vol. 45 ›› Issue (12): 697-701.doi: 10.13218/j.cnki.csdc.2015.12.008

• KAIFA YU YINGYONG • Previous Articles     Next Articles

Studies on the oil/water interfacial properties of anionic/cationic blended Gemini surfactant systems

HOU Cong1, WU Xiao-mei2, LAI Lu1, CHENG Li3, MEI Ping1   

  1. 1.College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou,Hubei 434023,China;
    2.Exploration and Development Research Institute,Huabei Oilfield,Renqiu,Hebei 062552,China;
    3.College of Petroleum Engineering,Yangtze University,Wuhan,Hubei 430100,China
  • Received:2015-08-07 Revised:2015-11-26 Published:2019-04-10

Abstract: The oil/water interfacial properties of binary blended systems of sulfonate Gemini surfactant (SGS-12) with single cationic surfactants (DTAC and CTAB),bis-quaternary ammonium salts (CD2N-12 and CD2N-16),and multiple quaternary ammonium salt (CD3N-12) were investigated.Results showed that the blended systems of SGS-12/DTAC,SGS-12/CTAB and SGS-12/CD2N-12 display synergism in oil/water interface tension reduction effectiveness.When the blending ratio of SGS-12 to DTAC is 3∶5,the interfacial tension between the aqueous system and crude oil can be decreased to 2.29×10-3 mN/m as the minimum.The lowest interfacial tension of the blended system of SGS-12/CTAB can achieve 1.84×10-3 mN/m at a 9∶5 blend ratio.When the blending ratio of SGS-12 to CD2N-12 is 6∶5,the interfacial tension can be reduced to 4.3×10-3 mN/m as the minimum.However,the blended systems of SGS-12/CD2N-16 and SGS-12/CD3N-12 exhibit no obvious synergism.

Key words: Gemin surfactant, anionic/cationic surfactant, blended system, interfacial property

CLC Number: 

  • TQ423