Effect of Thermal Treatment of the Hydroxyapatite Powders on the Micropore and Microstructure of Porous Biphasic Calcium Phosphate Composite Granules | Zendy

David S. H. Lee | Zendy; Y. Pai | Zendy; Steve W. Chang | Zendy

Open Access

Effect of Thermal Treatment of the Hydroxyapatite Powders on the Micropore and Microstructure of Porous Biphasic Calcium Phosphate Composite Granules

Author(s) -

David S. H. Lee,

Y. Pai,

Steve W. Chang

Publication year - 2013

Publication title -

journal of biomaterials and nanobiotechnology

Language(s) - English

Resource type - Journals

eISSN - 2158-7043

pISSN - 2158-7027

DOI - 10.4236/jbnb.2013.42015

Subject(s) - materials science , calcination , microporous material , scanning electron microscope , porosity , microstructure , chemical engineering , sintering , composite number , agglomerate , fourier transform infrared spectroscopy , thermal treatment , phosphate , mineralogy , composite material , chemistry , organic chemistry , engineering , catalysis

The effect of thermal treatment of the hydroxyapatite powders on the micropore structure of porous biphasic calcium phosphate (BCP) granules was examined. The porous BCP granules could be attained through mixing and sintering/fracturing thermally treated 60 wt% hydroxyapatite powders and calcined 40 wt% β-tricalcium phosphate powders. The observed Scanning electron microscopy (SEM) morphologies showed that the density of micropores (0.1 - 2.0 μm) including interconnected micropores of the porous BCP granules mixed with hydroxyapatite powders thermally treated at 900°C was significantly improved and the composite particles of porous BCP granules were homogeneously mixed and distributed. This result indicates that the particles of hydroxyapatite powders that have a tendency to agglomerate at a room temperature were well isolated and dispersed through thermal treatment processing before mixing with calcined β-tricalcium phosphate powders. The microstructural characterizations such as phase purity and composition of porous BCP granules were performed and verified by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) analysis.