Prototypes of porous hydroxyapatite (HAp) were produced from Gypsum/PVA composite, using a mass proportion of 15% polymer. The material was obtained by means of chemical conversion in (NH4)2HPO4 0.5 mol.L-1 solution and NH4OH 6.0 mol.L-1 alkaline medium for pH control, maintained between 6.0 and 9.0. The reaction occurred at a temperature of 100°C at different test times. The obtained HAp was characterized by several techniques, such as FTIR, which identified the SO42- groups characteristic for the Gypsum block, and the PO43- groups that are attributed to the biomaterial HAp, besides XRD and SEM, which made it possible to confirm a successful conversion of the material. Tests for mechanical resistance to compression (σc) were carried out for both materials as well.
CITATION STYLE
Barbosa, A. A., De Vasconcelos Ferraz, A., Dantas, A. C., & Olivier, N. C. (2014). The production of hydroxyapatite prototypes from solid bodies of gypsum/polyvinyl alcohol composites. Materials Research, 17, 39–44. https://doi.org/10.1590/S1516-14392014005000062
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