Characterization at 25 °C of Sodium Hyaluronate in Aqueous Solutions Obtained by Transport Techniques

Mutual diffusion coefficients, D, were determined for aqueous solutions of sodium hyaluronate (NaHy) at 25 degrees C and concentrations ranging from 0.00 to 1.00 gdm(-3) using the Taylor dispersion technique. From these experimental data, it was possible to estimate some parameters, such as the hydrodynamic radius R-h, and the diffusion coefficient at infinitesimal concentration, D-0, 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, k(H), and limiting viscosity number, [], were computed for interaction NaHy/water and NaHy/NaHy determination.