Intermolecular Interactions of Binary Mixtures Comprising 2-Benzylaminoethanol with Alcohols (C₁−C₃) at Different Temperatures: Experiments and Modelling

This manuscript represents the physical quantities comprising the densities, speed of sound and refractive indices for the binary mixtures involving [2-Benzylaminoethanol (BAE) with methanol, ethanol, 1-propanol, or 2-propanol] over a molar composition (x_BAE=0–1). The measurements were conducted with the use of Anton Paar densimeter (DSA 5000 M) operated at different temperatures, T=(293.15–323.15) K and at atmospheric pressure. The intermolecular interactions occurring between the prepared binary mixtures were interpreted by computing the excess properties including excess molar volumes ((Formula presented.)), isentropic compressibilities ((Formula presented.)), intermolecular free length ((Formula presented.)), specific acoustic impedance ((Formula presented.)), relative association ((Formula presented.), relaxation strength ((Formula presented.)), and Rao's molar sound function ((Formula presented.)). The Redlich-Kister polynomial equation was utilized to fit the computed excess properties and PC-SAFT EoS was utilized for modeling the measured densities. In addition, the Laplace mixing rule as well as the Nomoto's relation were utilized for the modeling of refractive indices and speed of sound, respectively. The experimental data was found in good agreement with the theoretical data for the measured properties.