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http://dx.doi.org/10.5012/jkcs.2004.48.3.236

Effect of n-Butanol on the Mixed Micellization of DPC with CDEAB  

Lee, Byung-Hwan (Department of Applied Chemical Engineering, Korea University of Technology and Education)
Publication Information
Journal of the Korean Chemical Society / v.48, no.3, 2004 , pp. 236-242 More about this Journal
Abstract
The critical micelle concentration (CMC) and the counterion binding constant (B) in a mixed micellar state of the Dodecylpyridinium chloride (DPC) with the Cetyldimethylethylammonium bromide (CDEAB) at 25$^{\circ}C$ in aqueous solutions of n-butanol were determined as a function of ${\alpha}_1$ (the overall mole fraction of DPC) by the use of electric conductivity method. Various thermodynamic parameters (($X_i,\;{\gamma}_i,\;C_i,\;a^M_i,\;{\beta},\;and {\Delta}H_{mix})$were calculated by means of the equations derived from the nonideal mixed micellar model. The effect of n-butanol on the mixed micellization of the DPC/CDEAB mixtures has been also studied by analyzing the measured and calculated thermodynamic parameters (CMC, B 및 $;{\Delta}G_o\;^m$).
Keywords
Mixed Surfactant System; Critical Micelle Concentration; Counterion Binding Constant; Non Ideal Mixed Micellar Model;
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