Abstract

Abstract Densities (ρ) and speeds of sound (u) were measured for the binary mixtures of monoethanolamine (MEA) with 2-methoxyethanol (ME), 2-ethoxyethanol (EE), 2-propoxyethanol (PE) and 2-butoxyethanol (BE) mixtures at temperatures 303.15, 308.15, 313.15 and 318.15 K over the entire composition range. These data were used to compute the isentropic compressibility (κS), excess molar volume ( V m E ) and excess isentropic compressibility ( κ S E ). The values of V m E were analyzed using Prigogine-Flory-Patterson (PFP) theory. The excess functions were fitted and correlated with Redlich–Kister and Hwang equations. The measured data were discussed in terms of intermolecular interactions between component molecules. The experimental speeds of sound data in the present investigated mixtures were compared with various theoretical models like collision factor theory (CFT) and free length theory (FLT) to check their relative merits of pure component properties. Moreover, the experimental excess functions were correlated in terms of FTIR spectral analysis.

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