Ultrasonic Absorption in Aqueous Solutions of Dextran

Abstract

The ultrasonic absorption measured in aqueous solutions of dextran (1–6 polyanhydroglucose) as a function of molecular weight (3.4 × 103–3.7 × 105) and frequency (3–195 MHz) reveals a relaxational behavior related to the calculated viscoelastic properties of free-draining random coils.