Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The changes in interfacial tension against water, density, and coefficient of viscosity of a binary mixture of tri-iso-amyl phosphate (TiAP) and n-dodecane have been measured before and after gamma radiolysis. Density, viscosity, and interfacial tension of binary mixtures are additive functions of mole fractions of TiAP and gamma absorbed dose, which respectively form a plane in three-dimensional plots of linear linear linear, loge loge linear, and loge loge linear scales. Logarithmic interfacial tension also forms a three-dimensional plane with density and viscosity in loge linear linear plot. Redlich Kister type equations (RK-eq) have been introduced to model excess properties of binary mixtures, where a second independent variable is the absorbed dose. The parametric coefficients of RK-eqs pertaining to excess molar volume, viscosity deviations, and interfacial tension deviations of the mixtures are linear functions of the absorbed dose. Molecular interactions between solute solute and solute solvent have also been quantified in terms of apparent molar volume at infinite dilution, among others.