Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 70, Issue 1, Pages 229-233Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1020678222376
Keywords
conductivity; critical micelle concentration; dodecylpyridinium chloride and bromide; enthalpy; entropy and standard Gibbs free energy; temperature dependence
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Electrical conductivity of aqueous solutions of dodecylpyridinium chloride and bromide have been determined. From these data the critical micelle concentration (cmc) was determined. The thermal properties as standard Gibbs free energy, enthalpy and entropy of micellization was estimated from a uncharged-phase separation model and enables to obtain another properties like heat capacity of micellization and the relevant parameters in the minimum of temperature dependence of cmc. The enthalpy-entropy compensation was shown for the studied compounds.
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