Densities and Viscosities of Binary Mixtures of Poly(ethylene glycol) and Poly(propylene glycol) in Water and Ethanol in the 293.15−338.15 K Temperature Range

Densities and viscosities of solutions of poly(ethylene glycol) (PEG) in water and ethanol and solutions of poly(propylene glycol) (PPG) in ethanol were measured at (293.2, 308.2, 313.2, 318.2, 328.2, 333.2, and 338.2) K. The number-average molecular weights for PEG were 200, 300, and 6000, and that for PPG was 2025. The density and viscosity data were fitted by second- and third-order polynomial equations, respectively, with respect to mass fraction of polymer at each temperature.