eng Science and Education Publishing Journal of Polymer and Biopolymer Physics Chemistry ISSN Pending 2013-11-22 1 1 13 21 10.12691/jpbpc-1-1-3 JPBPC2013113 article Martin Alberto Masuelli masuelli@unsl.edu.ar 1 Instituto de Física Aplicada, CONICET. Cátedra de Química Física II, Área de Química Física The study of biopolymers as dextran in aqueous solution, is effectively determined by intrinsic viscosity [] 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. http://pubs.sciepub.com/jpbpc/1/1/3/jpbpc-1-1-3.pdf intrinsic viscositydextransMark-Houwink parametershydrodynamictemperature