Characterization at 25 °C of Sodium Hyaluronate in Aqueous Solutions Obtained by Transport Techniques
Aleš Mráček,
Lenka Gřundělová,
Antonín Minařík,
Luís M. P. Veríssimo,
Marisa C. F. Barros,
Ana C. F. Ribeiro
Affiliations
Aleš Mráček
Department of Physics and Material Engineering, Faculty of Technology, Tomas Bata University in Zlín, nám. T.G.Masaryka 275, Zlín 762 72, Czech Republic
Lenka Gřundělová
Centre of Polymer Systems, Tomas Bata University in Zlín, nám. T.G. Masaryka 5555, Zlín 760 01, Czech Republic,
Antonín Minařík
Department of Physics and Material Engineering, Faculty of Technology, Tomas Bata University in Zlín, nám. T.G.Masaryka 275, Zlín 762 72, Czech Republic
Luís M. P. Veríssimo
Coimbra Chemistry Centre, Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal
Marisa C. F. Barros
Coimbra Chemistry Centre, Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal
Ana C. F. Ribeiro
Coimbra Chemistry Centre, Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal
Mutual diffusion coefficients, D, were determined for aqueous solutions of sodium hyaluronate (NaHy) at 25 °C and concentrations ranging from 0.00 to 1.00 g·dm−3 using the Taylor dispersion technique. From these experimental data, it was possible to estimate some parameters, such as the hydrodynamic radius Rh, and the diffusion coefficient at infinitesimal concentration, D0, of hyaluronate ion, permitting us to have a better understanding of the structure of these systems of sodium hyaluronate in aqueous solutions. The additional viscosity measurements were done and Huggins constant, kH, and limiting viscosity number, [η], were computed for interaction NaHy/water and NaHy/NaHy determination.
