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Micellization of decyl- and dodecyldimethylbenzylammonium bromides at various temperatures in aqueous solutions

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Abstract.

Electrical conductivity and density measurements of aqueous solutions of decyl- and dodecyldimethylbenzylammonium bromides have been determined at various temperatures. From these data the critical micelle concentration (cmc) and the degree of ionization of the micelles were determined. The standard free energy of the micellization process and the minima of the temperature dependent values of the cmc were estimated. From the density data the apparent molal volumes of the monomeric and micellized surfactants as well as the contributions of the methylene and phenylene groups were estimated.

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Authors and Affiliations

  1. Universidad de Santiago de Compostela, Facultad de Física, Departamento de Fisica de la Materia Condensada, 15706 Santiago de Compostela, Spain, , , , ,

    A. González-Pérez,  J. Del Castillo &  J. Rodríguez

  2. Jagiellonian University, Faculty of Chemistry, Ingardena 3, 30-060 Kraków, Poland, , , , ,

    J. Czapkiewicz

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  1. A. González-Pérez
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  2. J. Del Castillo
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  3. J. Czapkiewicz
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  4. J. Rodríguez
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González-Pérez, .A., Del Castillo, .J., Czapkiewicz, .J. et al. Micellization of decyl- and dodecyldimethylbenzylammonium bromides at various temperatures in aqueous solutions. Colloid Polym Sci 280, 503–508 (2002). https://doi.org/10.1007/s00396-001-0635-2

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  • DOI: https://doi.org/10.1007/s00396-001-0635-2

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