Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (5): 917-922.doi: 10.3866/PKU.WHXB201403191

• SOFT MATTER • Previous Articles     Next Articles

Surface Properties in the Mixed Systems of Dodecylammonium Chloride and Sodium Alcohol Ether Sulphate

CHENG Xin-Hao2, ZHAO Ou-Di2, ZHAO Hai-Na1, HUANG Jian-Bin1,2   

  1. 1 Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. China;
    2 College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2014-01-13 Revised:2014-03-18 Published:2014-04-25
  • Contact: HUANG Jian-Bin
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2013CB933800), Research Fund for the Doctoral Program of Higher Education of China, and Xinjiang Uygur Autonomous Region High Technology Research and Development Program, China (201215138).


The surface properties and micellar behaviors of mixed systems composed of dodecylammonium chloride (DAC) and sodium alcohol ether sulphate (AES) have been studied in great detail. The results of this study revealed that the mixed systems possessed excellent surface activities over a wide range of molar ratios and temperature intervals. Variations in the critical micelle concentrations (cmc) and corresponding surface tension (γcmc) of the mixtures were determined over a range of molar ratios and temperatures, and several environmental factors were also evaluated, such as pH and ionic strength.

Key words: Cationic and anionic surfactant mixed system, Solubility, Ultra-low interfacial tension, Surface property