Densities, Viscosities, Refractive Indices, and Excess Molar Enthalpies of Binary Mixtures Containing Poly(ethylene glycol) 200 and 400 + Dimethoxymethane and + 1,2-Dimethoxyethane at 298.15 K

Abstract

Densities, ρ, viscosities, η, refractive indices, nD, and excess molar enthalpies, , of poly(ethylene glycol) 200 and 400 + dimethoxymethane and + 1,2-dimethoxyethane were determined over the entire range of composition, at 298.15 K and at atmospheric pressure. Excess molar volumes, , viscosity deviations, Δη, deviations in molar refractions, ΔR, and excess molar enthalpies, , were evaluated from experimental data. Deviations are negative with the exception of those of , which are all positive. The excess or bulk properties were fitted to the Redlich−Kister polynomial to estimate the binary interaction parameters. The McAllister multibody interaction model was used to correlate the kinematic viscosities of liquid mixtures with mole fractions.