Investigations of the hydration of dextran using an acoustic method

Downloads

Authors

  • Adam JUSZKIEWICZ Institute of Chemistry, Jagiellonian University, Poland
  • Jadwiga POTACZEK Institute of Chemistry, Jagiellonian University, Poland

Abstract

Measurements of the velocity of ultrasound in alcohol-water solutions of dextran with molecular weights 40 000 and 500 000 in the temperature range of 10-35°C have been made. The values of the hydration numbers have been determined and it has been shown that hydration is independent of the molecular weight of the dextran.

References

[1] H. S. FRANK, M. W. EVANS, Free volume and entropy in condensed systems, III Entropy in binary liquid mixtures: partial molal entropy in dilute solutions; structure and thermodynamics in aqueous electrolytes, J. Chem. Phys., 13, 507-532 (1945).

[2] G. G. MALENKOV, Geomietriczeskoj aspekl jawlenija stabilizacji struktury wody molekulami nieelekirolitow, Zur. Strukt. Chim., 7, 331-336 (1966).

[3] M. J. BLANDAMER, Acoustic properties, Water – a comprehensive treatise, Plenum Press, New York 1973, vol. 2 pp. 495-528.