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http://dx.doi.org/10.5012/jkcs.2009.53.2.118

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

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)
Publication Information
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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Times Cited By KSCI : 4  (Citation Analysis)
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