Study of intermolecular interactions in binary mixtures of methyl acrylate with benzene and methyl substituted benzenes at different temperatures: An experimental and theoretical approach

The ultrasonic speeds, u and viscosities, eta of the binary mixtures of methyl acrylate with benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene over the whole mole fraction range were measured at six different temperatures and at atmospheric pressure. From the experimental data, the excess isentropic compressibility, kappa<INF>s</INF>E, excess ultrasonic speed, uE, excess molar isentropic compressibility, K<INF>s,m</INF>E, excess specific impedance, ZE and deviations in viscosity, Ali have been calculated. The partial molar isentropic compressions, (K) over bar <INF>s,m,1</INF>-E and (K) over bar <INF>s,m,2</INF>-E and excess partial molar isentropic compressions, (K) over bar <INF>s,m,1 </INF>and (K) over bar <INF><INF>s,m,2</INF></INF>, partial molar isentropic compressions, (K) over bar <INF>s,m,1</INF>-Eand (K) over bar <INF>s,m,2</INF>-E of the components at infinite dilution have also been calculated. The results specified the existence of weak interactions between unlike molecules, and these interactions follow the order: benzene > toluene > p-xylene > m-xylene > o-xylene > mesityle ne. The magnitude of interactions was found to be dependent on the number and position of the methyl groups in these aromatic hydrocarbons. (C) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.