Volumetric, transport and acoustic properties of [4-methyl-2-pentanol + 2-methoxyethanol, or 2-(2-methoxyethoxy)ethanol, or 2-{2-(2-methoxyethoxy)ethoxy}ethanol] at varying temperatures

Density ($\rho$), viscosity ($\eta$) and speed of sound (u) of pure components and binary mixtures of 4-methyl-2-pentanol with alkoxyethanols viz., 2-methoxyethanol, 2-(2-methoxyethoxy)ethanol and 2-{2-(2-methoxyethoxy)ethoxy}ethanol have been measured at T = (298.15, 303.15, 308.15) K over the entire range of composition at pressure p = 0.10 MPa. Thermodynamic properties such as excess molar volume ($V_m^E$), excess molar isentropic compressibility ($K_{s,m}^E$), deviation in speed of sound ($u^D$), deviation in viscosity (Δη) and excess Gibbs free energy of activation for viscous flow ($\Delta G^{\ast E}$) have been calculated using experimental data. The interaction between like and unlike molecules can be described using the excess or deviation properties. The Redlich-Kister polynomial equation has been used to correlate the values of the excess and deviation properties. Further, density values were used to calculate partial molar volumes (${\overline{V}}_{m,i}$). Various semi-empirical relations have been considered to correlate the measured viscosities, including Grunberg-Nissan, Tamura-Kurata, Hind et al., Katti-Chaudhri, McAllister (three body interaction) model, Heric-Brewer and McAllister (four body interaction) model. In addition, Prigogine-Flory-Patterson (PFP) theory is used to obtain the $V_m^E$ values. The results obtained are discussed in term of intermolecular interactions taking place between the molecules of liquid components under investigation.