Density, Viscosity, and Excess Properties for Aqueous Poly(ethylene glycol) Solutions from (298.15 to 323.15) K

Abstract

Density and viscosity were determined over the whole concentration range for the binary mixtures of poly(ethylene glycol) + water at six temperatures in the range of (298.15 to 323.15) K. The experimental results are compared with data published in the previous literature. The density (ρ) and viscosity (η) values were used to calculate the excess molar volume (VmE) and viscosity deviation (Δη). The computed results are fitted to a Redlich−Kister equation to obtain the coefficients and estimate the standard deviations between the experimental and calculated quantities. The values of VmE are negative, whereas the values of Δη are positive over the entire composition range.