Nanosized calcium-deficient carbonated hydroxyapatite synthesized by microwave activation

Calcium phosphates are essential components in the development of bioactive materials because of their perfect biocompatibility,their ability to bio-degradation and their biological reactivity. in fact,their chemical compositions are similar to the hard tissue of bone and teeth. we are interested in the synthesis of a calcium phosphate-carbonated apatite. its biological properties,its availability and low cost as well as its physico-chemical properties. in our work a template free and in atmospheric conditions using microwave-precitation method was successfully developed for the synthesis of nanosized carbonated hydroxyapatite (cha),which enables to synthesize the ultra fine and high purity powders in short time. the prepared cha were characterized by means of x ray diffraction (xrd),fourier transform infrared spectroscopy (ftir),transmission electron microscopy (tem) as dried and after calcination. tem images showed a clear spherical morphology nanoparticles with diameter around 66 nm before calcination which increase of size after calcination is around 180 nm. the xrd and ftir indicated a typical carbonated hydroxyapatite phase with high cristallinity after calcination.