Volumetric, acoustic, and viscometric studies of molecular interactions in binary mixtures of dipropylene glycol dimethyl ether with 1-alkanols at 298.15 K

In this work densities, ρρ, ultrasonic speeds, u  , and viscosities, ηη, have been measured over the whole composition range for the binary mixtures of dipropylene glycol dimethyl ether (DPGDME) with ethanol, 1-propanol, 1-pentanol, and 1-heptanol at 298.15 K along with the properties of the pure components. By using the experimental values of ρρ, u  , and ηη, excess molar volume, VmE, deviations in viscosity, ΔηΔη, excess free energy of activation for viscous flow, ΔG∗EΔG∗E, excess molar isentropic compressibility, KS,mE, deviation of the speeds of sound, uDuD, from their ideal values uiduid in an ideal mixtures, apparent molar volume, and apparent molar compressibility, V¯φ,i0 and K¯φ,i0 of the components at infinite dilution have been calculated. Finally, the experimental viscosity data have been correlated by the methods of Grunberg–Nissan, Hind, Tamura–Kurata, Chaudhry, Auslaender, Heric, and with McAllister correlations.