Structure of chitosan gels mineralized by sorption

• Properties of chitosan thermosensitive gels after adsorption calcium are presented.
• Hydrogels after sorption were modified in: pH 7 buffer and sodium hydrogen phosphate.
• Modification in order to obtain compounds similar to the hydroxyapatites.

The paper presents the structural studies of mineralized chitosan hydrogels. Hydrogels produced by using sodium beta-glycerophosphate (Na-β-GP) as a neutralizing agent. Mineralization was performed method “post loading”, which consisted in sorption to the gels structure Ca ions. In order to obtain – in the structure of gels – compounds similar to the hydroxyapatites present naturally in bone tissue, gels after sorption were modified in: pH 7 buffer and sodium hydrogen phosphate. In order to determine the structural properties of the gels, the following methods were used: infrared spectroscopy with Fourier transformation, FTIR, X-ray diffractometry, XRD, scanning electron microscopy, SEM.