Excess thermodynamic properties of intermolecular interactions in binary liquid mixtures of furfural with alkyl acetates (C1-C5) at different temperatures

Abstract

Abstract In this paper, we reported the densities (ρ) and speeds of sound (u) for the binary mixtures containing furfural (FA) and alkyl esters (methyl acetate (MA), ethyl acetate (EA), propyl acetate (PA), butyl acetate (BA) and amyl acetate (AA) at four temperatures (T = 303.15, 308.15, 313.15 and 318.15 K) and at atmospheric pressure. These experimental results have been further used to calculate excess molar volume ( V m E ) and excess molar isentropic compressibility ( K S E ), excess intermolecular free length ( L f E ) and excess acoustic impedance (uE) have also been calculated to support the experimental results. The excess properties have been fitted to Redlich-Kister equation. Further, theoretical results have also been discussed by using Prigogine–Flory–Patterson (PFP) theory, Intermolecular free length theory and collision frequency theory. From the interpretation of excess properties, the existence of specific interactions and interactions due to formation of hydrogen bonding between the unlike molecules has been revealed.