Abstract
The density, ultrasonic velocity of sound and viscosity of binary mixtures of N,N-dimethyl aniline (N,NDMA) with 1-propanol, +2-propanol, +1-butanol, +2-butanol, +1-pentanol, +2-methyl-1-propanol, +2-methyl-2-propanol were measured at 303.15 K. These experimental data have been used to calculate excess volume VE, excess ultrasonic speeds uE, excess intermolecular free length L E f , excess acoustic impedance ZE, excess isentropic compressibility κ E s , deviation in viscosity Δη and excess Gibbs free energy of activation of viscous flow (G*E). The values of L E f and κ E s are negative over the wide range of composition for all the binary mixtures, while the values of ZE are positive. These results have been used to discuss the nature of interaction between unlike molecules in terms of hydrogen bonding, dipole-dipole interaction, proton-acceptor interaction and dispersive forces. The viscosity data have been correlated using three equations: Grunberg and Nissan, Katti & Chaudhri and Hind et al. The excess/deviations were fitted by a Redlich-Kister equation and the results were analyzed in terms of specific interactions present in these mixtures.
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Manukonda, G., Ponneri, V., Kasibhatta, S. et al. Density, ultrasonic velocity, viscosity and their excess parameters of the binary mixtures of N,N-dimethylaniline+1-alkanols (C3-C5), +2-alkanols (C3-C4), +2-methyl-1-propanol, +2-methyl-2-propanol at 303.15K. Korean J. Chem. Eng. 30, 1131–1141 (2013). https://doi.org/10.1007/s11814-013-0014-y
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DOI: https://doi.org/10.1007/s11814-013-0014-y