Ultrasonic studies on molecular interactions in binary mixtures of N-methyl aniline with methyl isobutylketone, +3-pentanone, and +cycloalkanones at 303.15 K

Abstract

Densities, ρ, viscosities, η, and ultrasonic sound velocities u of pure methyl isobutylketone, diethylketone, cyclopentanone, cyclohexanone, 2-methyl cyclohexanone and those of their binary mixtures with N-methyl aniline were measured at 303.15 K over the entire composition range. These experimental data have been used to calculate the excess volume (V E), deviation in ultrasonic sound velocity (δu), isentropic compressibility (κ s ), intermolecular free length (L f), excess intermolecular free length (LfE L f E), acoustic impedance (Z), excess isentropic compressibility (κSEκ S E), deviation in viscosity (δη) and excess Gibbs energy of activation of viscous flow (G E). The viscosity data have been correlated using three equations proposed by Grunberg and Nissan, Katti and Chaudhri, and Hind et al. The excess/deviations have been fitted by Redlich-Kister equation and the results are discussed in terms of molecular interactions present in these mixtures. © 2013 Springer Science+Business Media New York.