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EXCESS THERMODYNAMIC PROPERTIES OF MIXTURES OF 2-BUTOXYETHANOL AND WATER AT 25-DEGREES-C

TitleEXCESS THERMODYNAMIC PROPERTIES OF MIXTURES OF 2-BUTOXYETHANOL AND WATER AT 25-DEGREES-C
Publication TypeJournal Article
Year of Publication1993
AuthorsHvidt, A, Koga, Y
JournalThermochimica Acta
Volume228
Pagination39-46
Date PublishedNov
Type of ArticleArticle
ISBN Number0040-6031
KeywordsPARTIAL MOLAR ENTHALPIES, SYSTEMS, TRANSITIONS
Abstract

Available measurements of thermodynamic properties (enthalpy, Gibbs free energy and volume) of mixtures of water with 2-butoxyethanol at 25-degrees-C are discussed, with emphasis on the concentration dependence of the excess functions, and on the role played by water. The data support the view that in the water-rich concentration range the nonpolar groups of the alcohol molecules introduce labile, highly cooperative, energy-low structures in water. At lower water concentrations, exposure of nonpolar groups to water appears to be minimized by formation of micellar-like alcohol structures.

URL<Go to ISI>://A1993MT06700006