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oai:riubu.ubu.es:10259/82282023-12-20T11:52:45Zcom_10259_4365com_10259_5086com_10259_2604com_10259_7463col_10259_4366col_10259_7464

Microwave Dielectric Relaxation Spectroscopy Study of Alkan-1-ol/Alkylbenzoate Binary Solvents Navarro Cuñado, A. Marta García Ruiz, Begoña Ibeas Cortes, Saturnino Hoyuelos Álvaro, Fco. Javier Peñacoba Maestre, Indalecio A. Leal Villalba, José María Alcohols Ethanol Mixtures Organic compounds Solvents Química física Chemistry, Physical and theoretical The structure and dynamics of alkan-1-ol/alkylbenzoate binary mixtures have been studied by microwave dielectric relaxation spectroscopy in the 200 MHz to 20 GHz frequency range. The binary mixtures of methanol, ethanol, propan-1-ol, butan-1-ol, and pentan-1-ol with methyl, ethyl, propyl, and butyl benzoates were studied at 298.15 K. The relaxational response of the pure alcohols, pure esters, and their binary mixtures over the full composition range is properly described by the Havriliak–Negami model. The alcohol content, alcohol length, and alkyl side-chain effects on the relaxational properties have been studied for these mixtures over the whole composition range. From the experimental readings, the effective and the corrective Kirkwood and Bruggeman correlation factors have been calculated. The data gathered have been interpreted in terms of the alkyl side-chain effect and their reliance on the mixture composition. The financial support by Junta de Castilla y León, Fondo Social Europeo, Project BU-299A12-1 is gratefully acknowledged. 2023-12-20T11:50:33Z 2023-12-20T11:50:33Z 2013-10 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 1520-6106 http://hdl.handle.net/10259/8228 10.1021/jp406609r 1520-5207 eng The Journal of Physical Chemistry B. 2013, V. 117, n. 39, p. 11765–11771 https://doi.org/10.1021/jp406609r info:eu-repo/semantics/openAccess application/vnd.ms-word American Chemical Society