Compressibility and volumetric studies of polyethylene-glycols in aqueous, methanolic, and benzene solutions at T=298.15K

Interactions of polyethylene glycols with water studied by measurements of density and sound velocity

“…It is seen that the results of Kushare et al [18] and Douheret et al [24] compare well with our corresponding results.…”

“…Recently, Kushare et al [18] reported compressibility and volumetric properties of PEGs in aqueous, methanolic and benzene solutions at 298.15 K. They used PEGs 400, 1000, and 4000 in their study in the concentration range from (0.05 to 0.5) mol Á kg À1 . They also attempted to estimate the hydration numbers of these PEGs by applying Shiio's method [19] and observed that PEG-4000 is hydrated most.…”

Monitoring the aggregation behaviour of self-assembling polymers through high-resolution ultrasonic spectroscopy

“…Several authors report that compressibility of solutes and their closely associated water molecules are negligible (Aeberhardt et al, 2005;Van Durme et al, 2005;Burakowski and Glinski, 2007;Kushare et al, 2007), thus a desolvation process leads to an increase of free water in the system and consequently to higher compressibility.…”

Effect of sodium phosphate salts on the thermodynamic properties of aqueous solutions of poly(ethylene oxide) 6000 at different temperatures

“…15, 298.15, and 303.15) K; this work also presents (vapour + liquid) equilibrium behaviour of ternary (PEO + -NaH 2 PO 4 + H 2 O, PEO + Na 2 HPO 4 + H 2 O, and PEO + Na 3 PO 4 + H 2 O) solutions at T = (298. 15 and 308.15) K and (liquid + liquid) equilibria of these ternary systems at T = (298. 15, 303.15, 308.15, 313.15, and 318.15) K. Although the effect of anion charge of electrolytes on the salting-out effect of polyethylene oxide by electrolytes has been studied [4,6,7], however, as far as we know there are no reports about the effect of charge on the anion on the volumetric and (vapour + liquid) equilibrium behaviour of PEO in aqueous solutions in the literature.…”