1Instituto de Física Aplicada, CONICET. Cátedra de Química Física II, Área de Química Física
2Departamento de Química, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, San Luis, Argentina
Journal of Polymer and Biopolymer Physics Chemistry.
2013,
Vol. 1 No. 1, 13-21
DOI: 10.12691/jpbpc-1-1-3
Copyright © 2013 Science and Education PublishingCite this paper: Martin Alberto Masuelli. Dextrans in Aqueous Solution. Experimental Review on Intrinsic Viscosity Measurements and Temperature Effect.
Journal of Polymer and Biopolymer Physics Chemistry. 2013; 1(1):13-21. doi: 10.12691/jpbpc-1-1-3.
Correspondence to: Martin Alberto Masuelli, Instituto de Física Aplicada, CONICET. Cátedra de Química Física II, Área de Química Física. Email:
masuelli@unsl.edu.arAbstract
The study of biopolymers as dextran in aqueous solution, is effectively determined by intrinsic viscosity [η] measurements at different temperatures. Molecular weight (Mv) and hydrodynamic properties can be calculated from there. The Mark-Houwink parameters indicate the dependence with temperature (T) in the range from 20 to 50ºC, ie with increasing T a increases and kM-H decreases. These hydrodynamic parameters show that these polysaccharides behave as a compact rigid sphere and contract by the increase of temperature (RH decreases) for the Mw range from 8.8 to 200kDa.
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