Digest Journal Of Nanomaterials And Biostructures, vol.4, no.1, pp.73-81, 2009 (Journal Indexed in SCI Expanded)
The effect of three different stirring techniques (magnetic, ultrasonic and double-step
stirring) on the properties of hydroxyapatite (HA) prepared from calcium hydroxide
[Ca(OH)2] and phosphoric acid [H3PO4] was investigated. The employed precipitation
processes were found to be suitable for the production of
nano-sized pure HA powders. Sample characterization was achieved by powder
X-ray diffraction (XRD), Fourier transformed infrared (FT-IR) transmission spectroscopy,
scanning electron microscopy (SEM), density and surface area measurements.
The double-step stirring technique played an important role to progress the homogenous
reaction and the preparation of pure and fine HA powder.