Thermodynamics Research Center / ThermoML | Thermochimica Acta

ABSTRACT

The densities and viscosities of 1,2-ethanediol with 1,2-propanediol or 1,3- propanediol, and 1,2-propanediol with 1,3-propanediol binary liquid mixtures over the entire concentration rang at temperatures (298.15 to 308.15) K with 5 K interval were measured. The experimental data were used to calculate the excess molar volume , partial molar volume , partial molar volume at infinite dilution , apparent molar volume , coefficient of thermal expansion , excess coefficient of thermal expansion , excess viscosity , excess Gibbs free energy of activation A , and other thermodynamic parameters. A Redlich Kister equation and Prigogine-Flory- Patterson (PFP) model was applied to correlate the excess molar volume results. Moreover, the viscosity data were correlated with the Grunberg-Nissan, Tamura-Kurata, Hind-Ubbelohde and Katti-Chaudhary equations. Good agreement was found between experimental data and modeling results.