Síntese caracterização de hidroxiapatita/gelatina

Abstract

Calcium phosphate-based biomaterials have been studied as bone substitutes and implant coverings due to their osteoconduction and osseointegration properties. Among these biomaterials, the main component of bone tissue HAP has been highlighted. The objective of this work was to synthesize HAP/ GEL through the wet reaction and to characterize the obtained material. The synthesis was carried out by dripping H3PO4 onto Ca(OH)2 solution with the addition of gelatin of different concentrations (6 g L-1 and 8 g L-1) and in the control samples. The characterization was performed using the techniques of XRD, FTIR, SEM and TG/dTG. DRX allowed to verify the decrease of the crystallite diameter in samples with a longer aging period and addition of gelatine when comparing the control samples (A1, A4 and A7). The FTIR proved the intensification of the CO32- and OH- bands that are also present in the gelatin structure, this intensification became more evident in samples with a longer aging period and gelatin concentrations. The SEM showed that in longer periods of aging and higher concentrations of gelatin the material had a more cement appearance and a more massive structure. The TG/dTG showed different events between the control samples and the samples with gelatine addition, these events following the same behavior that was observed in. Through the obtained results, it was possible to confirm the incorporation of the gelatin in the HAP structure. Therefore, we can consider that the synthesis method used was efficient in the formation of hydroxyapatite, as the majority phase. The characterization techniques used provided results that allowed the verification of the hydroxyapatite phase, the incorporation of the gelatine in the structure, being efficient.