Ultrasonic Velocity Studies and Allied Parameters of Polyacrylamide/Polyethyleneglycol (600) and Polyacrylamide/Polyvinylalcohol Blend Solution at Low Concentrations

摘要

Viscosity, adiabatic compressibility, intermolecular free length, and acoustic impedance of polyacrylamide in polyethylene glycol (600) and polyvinyl alcohol polymer blended solutions at 303 K have been evaluated from ultrasonic (2 MHz) measurements of their density. The results have been interpreted in light of polymer-solvent and polymer-polymer interactions. Variations in the compatibility of the blends caused by increases of PEG (600) and polyvinyl alcohol are also ultrasonically studied. Structural changes have been found in the PVA and PEG (600) systems.