Studies on molecular interactions through thermophysical properties and FTIR analysis of binary systems of a green solvent furfuryl alcohol with 2-alkoxyethanols

The present paper provides the physiochemical properties of binary systems of a bio-derived, ecosustainable solvent furfuryl alcohol with 2-alkoxyethanols. Speed of ultrasound (U), density (rho) of pure liquids and binaries of furfuryl alcohol with 2-methoxyethanol, 2-ethoxyethanol and 2butoxyethanol have been measured at four temperatures from 303.15 K to 318.15 K (with interval as 5 K). From the measured experimental data, excess free length (LEf ), excess volume per mole (VEm) and isentropic compressibility deviation (Delta kappa s) have been calculated. For fitting the data of excess parameters, Redlich-Kister polynomial equation has been used and the corresponding standard deviation is computed. The variations in the parameters under investigation indicated molecular associations among the components of the mixture. Partial molar studies have approved these results. Further, FTIR spectral analysis has been undertaken to confirm the interactions of furfuryl alcohol and 2-alkoxyethanols. The FTIR analysis is well agreed with the thermodynamic findings.