Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (1): 356-364.doi: 10.3866/PKU.WHXB201512012

• ARTICLE • Previous Articles     Next Articles

Mixed Micelle of Surface Active Ionic Liquid Lauryl Isoquinolinium Bromide and Nonionic Surfactant Triton X-100 in Aqueous Solutions

Xiao-Hong ZHANG,Hong-Yan XU,Ling-Ling GE,Rong GUO*()   

  • Received:2015-10-15 Published:2016-01-13
  • Contact: Rong GUO E-mail:guorong@yzu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(201010113, 21573191);Priority Academic Program Development of Jiangsu Higher Education Institutions and State Key Laboratory of Heavy Oil Processing, China

Abstract:

The critical micelle concentrations of binary systems of surface active ionic liquid lauryl isoquinolium bromide ([C12iQuin]Br) with nonionic surfactant Triton X-100 in aqueous solution were investigated by isothermal titration calorimetry. The location of [C12iQuin]Br and Triton X-100 in the mixed micelle was studied using 1H nuclear magnetic resonance (NMR) and two-dimensional nuclear Overhauser enhancement spectroscopy (2D NOESY). It was found that the polyoxyethylene chain of Triton X-100 forms random coils around the isoquinolinium ring. The interaction of molecules in the mixed micelle of [C12iQuin]Br-Triton X-100 was also studied using regular solution theory and the cloud point measurement technique, with comparison to the interaction of doceyl trimethyl ammonium bromide (DTAB)-Triton X-100.

Key words: Surface active ionic liquid, Lauryl isoquinolinium bromide, Triton X-100, Mixed micelle

MSC2000: 

  • O648.1