Calcium Phosphate Porous Materials with Unique Microstructures
Three types of calcium phosphate porous materials were prepared by the applied hydrothermal method. One of them was non-stoichiometric hydroxyapatite (HA) with calcium deficient composition and the others were β-tricalcium phosphate (β-TCP) and HA/β-TCP bi-phase material. Granules with several millimeter in size of calcium deficient HA, β-TCP and HA/β-TCP could be prepared. These granules with porosity over 70 % were composed of rod-shaped particles with aspect ratio about 10. Rod-shaped particles were locked together to make sub-micro-sized pores of about 0.1 to 0.5 µm in size. These materials must be suitable for the bone graft materials and as the scaffolds of cultured bone.
Marcelo Prado and Cecília Zavaglia
K. Ioku et al., "Calcium Phosphate Porous Materials with Unique Microstructures", Key Engineering Materials, Vols. 396-398, pp. 645-648, 2009