Prediction of associational behaviour of binary liquid mixtures from viscosity data at 298.15, 303.15, 308.15 and 313.15 K

Abstract

Densities and viscosities were measured for the binary liquid mixtures formed by benzonitrile, chlorobenzene, benzyl chloride and benzyl alcohol with benzene at T = 298.15, 303.15, 308.15 and 313.15 K and atmospheric pressure over the whole concentration range. Prigogine–Flory–Patterson (PFP) and Ramaswami and Anbananthan models were used to study the associational behaviour of two weakly interacting liquids. The models were also tested for different systems showing that the latter yields fair agreement between theory and experiment. The experimental values of viscosities were fitted to the Redlich–Kister polynomial relation to estimate the binary coefficients and standard errors. Furthermore, McAllister multibody interaction model is used to correlate the binary viscosities with the experimental findings.