Thermodynamic and transport properties of binary mixtures of dimethyl sulfoxide with t-butyl alcohol, butyl acetate, 2-butanone and butyl amine at different temperatures

Abstract

Densities and viscosities of binary mixtures of dimethyl sulfoxide (DMSO) with tert-butyl alcohol, butyl acetate, butanone, and butyl amine were determined over the entire range of mole fractions at temperatures of 298.15, 308.15, and 318.15 K. At each temperature, the excess molar volume (V E ), viscosity deviations (Δη), and Gibbs excess free energy of activation for viscous flow (ΔG *E ) have been investigated from these measured density (ρ) and viscosity (η) values. The experimental viscosity data were correlated by means of the equations of Grunberg-Nissan, Tamura and Kurata, and Hind et al. The deviations have been fitted to a Redlich-Kister equation, and the results are discussed in terms of molecular interactions and structural effects.