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Study on the Micellization of CPC/Brij 35 Mixed Surfactant Systems in Water

순수 물에서 CPC/Brij 35 혼합계면활성제의 미셀화에 대한 연구

  • Gil, Han-Nae (Department of Applied Chemical Engineering, Korea University of Technology & Education) ;
  • Lee, Byung-Hwan (Department of Applied Chemical Engineering, Korea University of Technology & Education)
  • 길한내 (한국기술교육대학교 응용화학공학과) ;
  • 이병환 (한국기술교육대학교 응용화학공학과)
  • Published : 2009.04.20

Abstract

The values of critical micelle concentration (CMC) and counter ion binding constants (B) in a micellar state of CPC (1-hexadecylpyridinium chloride) with Brij 35 (polyoxyethylene(23) lauryl ether) in water were determined as a function of ${\alpha}_1$ (the overall mole fraction of CPC) by the use of electric conductivity method. Various thermodynamic parameters ($X_i,\;{\gamma}_i,\;C_i,\;a_{i}^{M},\;\beta,\;and\;{\Delta}H_{mix}$) were calculated and analyzed by means of the equations derived from the non-ideal mixed micellar model. And thermodynamic parameters (${\Delta}{G^o}_m,\;{\Delta}{H^o}_m,\;and\;{\Delta}{S^o}_m$) for the micellization of CPC/Brij 35 mixtures were also calculated from the temperature dependence of the CMC values. The values of ${\Delta}{G^o}_m$ are all negative, but the values of ${\Delta}{S^o}_m$ and ${\Delta}{H^o}_m$ are positive or negative, depending on the measured temperature and ${\alpha}_1$.

Keywords

CPC;Brij 35;Critical Micelle Concentration;Counter Ion Binding Constant;Non-ideal Mixed Micellar Model;Iso-Structural Temperature

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  2. Mixed Micellization of Sodium Dodecylbenzene Sulfonate with Polyoxyethylene Lauryl Ether Surfactants (POLE4 and POLE23) in n-Butanol Aqueous Solution vol.15, pp.1, 2012, https://doi.org/10.1007/s11743-011-1287-y