Characterization of 1-alkanol + strongly polar compound mixtures from thermophysical data and the application of the Kirkwood-Buff integrals and Kirkwood-Fröhlich formalisms

Densities,  , and kinematic viscosities,  , have been determined at atmospheric pressure and at (293.15-303.15) K for binary mixtures formed by methanol and one linear polyether of the type CH3-O-(CH2CH2O)n-CH3 (n =2,3,4). Measurements on  and  were carried out, respectively, using an Anton Paar DMA 602 vibrating-tube densimeter and an Ubbelohde viscosimeter. The  values are used to compute excess molar volumes, E m V , and, together with  results, dynamic viscosities ( ). Deviations from linear dependence on mole fraction for viscosity,   , are also provided. Different semi-empirical equations have been employed to correlate viscosity data. Particularly, the equations used are: Grunberg-Nissan, Hind, Frenkel, Katti-Chaudhri, McAllister and Heric. Calculations show that better results are obtained from the Hind equation. The E m V values are large and negative and contrast with the positive excess molar enthalpies, E m H , available in the literature, for these systems. This indicates that structural effects are dominant. The   results are positive and correlate well with the difference in volume of the mixture compounds confirming the importance of structural effects. The temperature dependences of  and of the molar volume have been used to calculate enthalpies, entropies and Gibbs energies, * G  , of viscous flow. It is demonstrated that * G  is essentially determined by enthalpic effects. Methanol + CH3-O-(CH2CH2O)n-CH3 mixtures have been treated in the framework of the ERAS model. Results on E m H are acceptable, while the composition dependence of the E m V curves is poorly represented. This has been ascribed to the existence of strong dipolar and structural effects in the present solutions.

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Volumetric and Viscosimetric Measurements for Methanol + CH3–O–(CH2CH2O)n–CH3 (n = 2, 3, 4) Mixtures at (293.15–303.15) K and Atmospheric Pressure: Application of the ERAS Model

González

Martı́nez

Sanz

et al. 2020

J Solution Chem

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Thermodynamic study of interactions between 1-alkanol and butanone

Almasi

2019

Chemical Physics

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Kirkwood-Buff integrals and structure factor for binary mixtures of ionic liquid with 1-alkanol

Khedri

Almasi

Maleki

2019

Journal of Molecular Liquids

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Characterization of 1-alkanol + strongly polar compound mixtures from thermophysical data and the application of the Kirkwood-Buff integrals and Kirkwood-Fröhlich formalisms

Cited by 3 publications

References 164 publications

Volumetric and Viscosimetric Measurements for Methanol + CH3–O–(CH2CH2O)n–CH3 (n = 2, 3, 4) Mixtures at (293.15–303.15) K and Atmospheric Pressure: Application of the ERAS Model

Volumetric and Viscosimetric Measurements for Methanol + CH3–O–(CH2CH2O)n–CH3 (n = 2, 3, 4) Mixtures at (293.15–303.15) K and Atmospheric Pressure: Application of the ERAS Model

Thermodynamic study of interactions between 1-alkanol and butanone

Kirkwood-Buff integrals and structure factor for binary mixtures of ionic liquid with 1-alkanol

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