Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

The densities, q of binary mixtures of tetrahydrofuran (THF) with methyl acrylate (MA), ethyl acrylate (EA), n-butyl acrylate (n-BA) and tert-butyl acrylate (t-BA) over the entire composition range including those of pure liquids, were measured at temperatures (293.15, 298.15, 303.15, 308.15, 313.15, 318.15) K and atmospheric pressure. From the experimental results, the excess molar volume, VE m, excess molar isobaric expansion, EE p;m, partial molar volumes, Vm;1 and Vm;2, excess partial molar volume, VE m;1 and VE m;2, excess partial molar isobaric expansions, EE p;m;1 and EE p;m;2 over the whole composition range; partial molar volumes, V m;1 and V m;2, and excess partial molar volumes, V E m;1 and V E m;2 of the components at infinite dilution have been calculated. The variations of these volumetric properties with composition and temperature are discussed in terms of the molecular interactions prevailing in these mixtures. It is observed that the THF-acrylate interactions in these mixtures follow the order: MA greater than EA greater than n-BA greater than t-BA. The values of VE m were also calculated theoretically by using Prigogine-Flory-Patterson (PFP) theory and the results were found in good agreement with the experimental findings.