Correlations and Predictions of THF + 2-Alkanol Binary Mixtures Behaviour by PC-SAFT Model and Friction Theory

In this article the behavior of tetrahydrofuran (THF) + 2-alkanol namely 2-propanol, 2-butanol, 2-pentanol, 2-hexanol and 2-heptanol binary mixtures through the density and viscosity measurements has been studied as a function of composition and within the temperature range of 293.15-313.15 K. The excess molar volume, isobaric thermal expansivity, partial molar volumes, and viscosity deviations have been calculated. For all binary mixtures, values of excess molar volume are positive and viscosity deviations are negative while increasing with the alkyl chain of the alcohol. The results provide information on the interactions among the molecules in the pure state as well as the binary liquid mixtures. The measured densities and viscosities have been applied to test the applicability of the PC-SAFT model and friction theory coupled with the Peng-Robinson-Stryjek-Vera equation of state.