Viscosity of aqueous solutions of poly(ethylene glycol)s at 298.15 K

Purification of lipase produced by a new source of Bacillus in submerged fermentation using an aqueous two-phase system

“…The highest PF was found with PEG 20,000 g/mol (169.46 fold), moreover its high viscosity makes difficult the formation of aqueous biphasic system and for this reason PEG 8000 g/mol was chosen for subsequent experiments (Table 2). According to Kirincic and Klofutar [24] reported that the increase in PEG molecular weight increases the viscosity of an aqueous solution of PEG, ranging among 4.41 cm 3 g −1 (PEG 400), 14.15 cm 3 g −1 (PEG 4000) and 42.02 cm 3 g −1 (PEG 20,000). Table 2 Effect of PEG molecular weight on the partitioning of lipase produced by Bacillus sp.…”

Measurement and correlation of density and viscosity of polyvinylpyrrolidone solutions in alcohols at different temperatures

“…Knowledge of volumetric properties of polymer solutions has been proven to be a very useful tool in evaluating the structural interactions occurring in these solutions [1][2][3][4]. Knowledge of the viscosity of polymer solutions is important for practical and theoretical purposes.…”

Effect of Poly(Ethylene Glycol) Coating on the Acoustic Properties of Biocompatible Magnetic Fluid

“…5) measurements. Their dependence on concentration of PEG is similar to that of aqueous solutions of PEG: density, ρ, and viscosity, η, increase in a nonlinear manner with PEG concentration and decrease with temperature [13,14]. The ultrasonic measurements of water solutions of PEG also showed that the velocity of ultrasonic waves increased with concentration at a given temperature [15,16].…”