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http://dx.doi.org/10.5012/jkcs.2014.58.6.517

Effects of NaCl and n-Butanol on the Solubilization of 4-Halogenated Phenols in Aqueous Solution of TTAB  

Lee, Byung-Hwan (Department of Applied Chemical Engineering, Korea University of Technology & Education)
Publication Information
Abstract
The micellization of TTAB(tetradecyltrimethylammonium bromide) and the solubilization of 4-halogenated phenol isomers in aqueous solution of that surfactant in water have been studied by the UV-Vis spectrophotometric method. Those properties in aqueous solutions of NaCl and n-butanol have been also measured to determine the interactions between the micelle and 4-halogenated phenols and the solubilized sites of those molecules in the micelle. The results show that the values of ${\Delta}G^o_m$ and ${\Delta}G^o_s$ are all negative and the trends of those values depend on both the kinds and the concentrations of additives. Namely, by adding NaCl both ${\Delta}G^o_m$ and ${\Delta}G^o_s$ values are all decreasing, but by adding n-butanol the ${\Delta}G^o_m$ value decreases and the ${\Delta}G^o_s$ value increases.
Keywords
TTAB; Phenol isomers; Critical micelle concentration; Solubilization constant; Micellization;
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