Acoustical and volumetric investigation of polyethylene glycol 400 and polyethylene glycol 4000 in aqueous solutions of glycerol at different temperatures

The intermolecular interactions of glycerol with two polyethylene glycols i.e. polyethylene glycol 400 and polyethylene glycol 4000 in aqueous medium have been examined from the measurements of density and ultrasonic speed at temperatures T = (293.15, 298.15, 303.15, 308.15) K and experimental pressure p = 0.1 MPa. The apparent molar volume (Vϕ), partial molar volume (Vϕo) and partial molar volume of transfer (ΔVϕo) have been evaluated from...