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

Abstract

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.

Thermodynamic studies of some non-electrolytes in aqueous solutions at low temperatures

“…The results are interpreted in terms of solute-solvent and solute-solute interactions. Thermodynamic properties for above systems have been reported by several workers, but at higher temperatures [3][4][5][6][7][8][9]. In the present work, it was 0021-9614/$ -see front matter Ó 2007 Elsevier Ltd. All thought worthwhile to investigate effect of solute on thermodynamic properties of water in the neighbourhood of TMD, where water is in a highly ordered state.…”

Densities of {poly(ethylene glycol)+water} over the temperature range (283.15 to 363.15)K

“…Eliassi et al have reported the density of PEGs (PEG400, PEG4000, and PEG6000) within the temperature range (283.15 to 328.15) K [9]. The Rahbari-Sisakht group studied temperature-dependent density and viscosity of PEGs (PEG200, PEG300, PEG6000) from T = (293.15 to 338.15) K [10]. Another temperature-dependent density measurement was performed on the (PEG4000 + water) from T = (308 to 338) K and the results were discussed in terms of molecular interactions occurring within the mixture [11].…”

Measurement and modeling of densities and sound velocities of the systems {poly(propylene glycol)+methanol, +ethanol, +1-propanol, +2-propanol and +1-butanol} at T=298.15K

“…In our knowledge, no experimental density and V ex m or speed of sound measurements have been reported in the literature for the (alcohol + PPG) systems. There is only a few density data for ethanol solutions of PPG with molar mass 2025 [10]. 0021 …”