Fig. 1

Physical-chemical and morphological characterization of chitosan biomineralized with HA-based nanoparticles and HA-based nanoparticles. (A) Visual analyses of resulting nanoparticles powders; scale: 1 cm. (B) Visual analyses of resulting nanoparticles at HA concentration equal to 2 mg/mL in water as a solvent; scale: 1 cm. (C) X-ray diffraction (XRD) spectra of resulting nanoparticles. Physical-chemical characterization of hydroxyapatite-based nanoparticles by FTIR-ATR (D) and by Thermogravimetric analyses (TGA) (E). (F), (G), (H), and (I) Scanning Electron Microscopy (SEM) images respectively of MgHA/CH, MgHA, FeHA/CH, and FeHA; in all SEM images scale bar is 400 nm