Synthesis and Characterisation of Pure Nanoporous Hydroxyapatite

Hydroxyapatite (ha) is a desirable implant material due to its biocompatibility and osteoconductive properties. in this paper, we report a simple and economical approach to produce pure nanoporous ha using a hydroxyapatite-chitosan (ha-cs) template. the removal of chitosan through calcination leads to ha containing nanosize pores. surface morphology analysis performed on both uncalcined and calcined ha-cs revealed disordered but interconnected pores. the removal of chitosan also resulted in a more even distribution of ha nanoparticles and a higher surface area. both x-ray diffraction (xrd) and fourier transform infrared (ftir) analyses confirmed that the obtained material consisted of primarily highly crystalline noncarbonated hydroxyapatite.