Preparation and characterization of hydroxyapatite powder and study of hydroxyapatite - alumina Composite

Abstract

Hydroxyapatite powder Ca10(PO4)6(OH)2 was prepared locally from Iraqi beef bones, and characterization the powder as well as studied purity. A composite of hydroxyapatite-alumina was also prepared with a ratio of alumina 0,5,10,15,20,25% wt. Use polyethylene glycol as a binder with 1% wt by dissolving polyethylene glycol with ethanol (1g: 100ml) at 40 °C and using a magnetic stirrer to obtain a homogeneous solution for the material. Then drying the powder and pressing to prepare compound samples, after that heat treatment at 1350°C for three hours. The physical and mechanical properties studied such as density, porosity, water absorption ratio, hardness and compression resistance, as well as X-ray diffraction and X-ray florescence. X-ray diffraction analysis showed that the hydroxyapatite phase was stabilized for all prepared samples before and after heat treatment with chemical form Ca10(PO4)6(OH)2, the hydroxyapatite showed a stabilization in phase before and after heat treatment without decomposition into different components.

PMMA bone cement with L -arginine/nano fish bone nanocomplex for apatite formation

“…The colour of the immersed samples becomes whiter and the surface roughness of the bone cement samples becomes coarser than that of non-immersed samples. The colour change to white is due to the increasing number of HA, which has a milky white colour [ 44 ]. The coarser appearance also indicates that more HA content can increase cell attachment, cell proliferation and adhesion strength [ 45 ].…”