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Thermal parameters associated to micellization of dodecylpyridinium bromide and chloride in aqueous solution

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Abstract

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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Authors and Affiliations

  1. Facultad de Física, Departamento de Física de la Materia Condensada, Grupo de Ciencia y Tecnología de Coloides, Universidad de Santiago de Compostela, E-15706, Santiago de Compostela, Spain

    J. J. Galán, A. Gonzáles-Pérez, J. L. Del Cactillo & J. R. Rodríguez

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  1. J. J. Galán
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  2. A. Gonzáles-Pérez
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  3. J. L. Del Cactillo
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  4. J. R. Rodríguez
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Correspondence to J. R. Rodríguez.

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Galán, J.J., Gonzáles-Pérez, A., Del Cactillo, J.L. et al. Thermal parameters associated to micellization of dodecylpyridinium bromide and chloride in aqueous solution. Journal of Thermal Analysis and Calorimetry 70, 229–234 (2002). https://doi.org/10.1023/A:1020678222376

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  • DOI: https://doi.org/10.1023/A:1020678222376

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