Volumetric and viscometric studies on 1,4-dioxane and methanol binary mixtures at different temperatures

Abstract

Densities and viscosities of binary liquid mixtures of 1,4-dioxane with polar solvent viz. methanol have been measured at 303.15, 308.15, 313.15 and 318.15 K. From the density and viscosity data, the values of various properties viz. excess molar volume (V E ), excess viscosity (η E ) and excess Gibb's free energy of activation of flow (ΔG E ) have been determine 1. Further the viscosities of binary mixtures have been correlated to various viscosity models. On the basis of the values of interaction parameters of these viscosity models and also on the basis of the values of various excess properties, the nature of molecular interactions between the components of mixtures have been explained.