Molecular interaction studies based on transport, thermodynamic and excess properties of aniline and alkanol mixtures at varying temperatures

Abstract

Density (ρ) data at 303.15 K–318.15 K, Sound speed (u) and viscosity (η) data at 303.15 K–313.15 K for the binary mixtures of aniline with 1-alkanols were measured over the entire composition range. The 1-alkanols included in this work were 1-propanol, 1-butanol, 1-pentanol and 1-hexanol. The experimental data were used to compute excess molar volume (VmE), excess isentropic compressibility (кSE) and deviation in viscosity (Δη). The excess data and deviation in viscosity (Δη) data were analyzed and correlated using Redlich-Kister and Hwang polynomial type equations. Also the experimental sound speed data were considered in terms of Schaff's collision factor theory (CFT) and Jacobson free length theory (FLT). Further, for all the measured viscosity values, the average absolute percentage deviation (AAPDs) values were obtained using various predictive and correlative models and the results were compared for prognostic analysis. Furthermore, the deviations of the measured properties in the investigation were examined in terms of divergent intermolecular interactions that exist among the constituent molecules.