Effect of Salts and Isomeric Butanols on the Mixed Micellar Properties of Cetylpyridinium Chloride with Triton X-100

Cetylpyridinium Chloride와 Triton X-100의 혼합 미셀화에 미치는 염 및 부탄올 이성질체들의 효과

  • Chung, Jong-Jae (Department of Chemical, College of National Sciences, Kyungpook National University) ;
  • Lee, Sang-Hak (Department of Chemical, College of National Sciences, Kyungpook National University) ;
  • Kim, Yung-Cheol (Health and Environmental Research Institute) ;
  • Lee, Byung-Hwan (Department of Applied Chemical Engineering, Korea University of Technology and Education)
  • 정종재 (경북대학교 자연과학대학 화학과) ;
  • 이상학 (경북대학교 자연과학대학 화학과) ;
  • 김영철 (대구광역시 보건환경연구원) ;
  • 이병환 (한국기술교육대학교 응용화학공학과)
  • Received : 1998.04.09
  • Accepted : 1998.09.02
  • Published : 1998.12.10


The critical micelle concentrations($CMC^*$) of the mixed surfactant systems of cationic surfactant cetylpyridinium chloride(CPC) and nonionic surfactant Triton X-100(TX-100) in aqueous solutions of salts(KCl and $Na_2CO_3$) and isomeric butanols(tert-butanol, iso-butanol and n-butanol) were determined by UV spectroscopy method. The various thermodynamic values in aqueous solutions of salts and isomeric butanols were compared with the values in pure water, calculated by means of the equation derived from the pseudo-phase separation model. Thermodynamic parameters($X_1$, $\beta$, ${\gamma}i$, $ai^M$, $C_i$ and ${\Delta}H_{mix}$) were found to have great effects of salts and isomeric butanols on the mixed micellization of CPC/TX-100 mixtures, and also in good agreements with the nonideal mixed micelle model. They showed all negative deviations from the ideal mixed micellar behavior.


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