Synthesis and characterization of nano hydroxyapatite using reverse micro emulsions as nano reactors

In the present work reverse micro emulsion has been employed as nano reactors to synthesize nano crystalline hydroxyapatite (ha). two precursors; calcium and phosphate with different counter ions of each were used for the synthesis of ha at two different temperatures. to maintain the emulsified nano reactor,cyclohexane,tx-100 and 1-butanol including phosphate precursor was the continuous phase while aqueous ca precursor solution was taken as the dispersed phase. nano crystalline particles thus produced were evaluated on the basis of synthesis route,counter ions and temperature. it has been shown that emuslsified nano reactors control the morphology,particle size and minimize phase transformation of ha. characterizations of nano powder of ha are carried out using x-ray diffraction (xrd),fourier transform infra-red spectroscopy (ftir),and scanning electron microscopy (sem). ha crystallite size was found to be in the range of 20-25 nm whereas the morphology of nano particles changed from spheres to rods. © 2015,chemical society of pakistan. all rights reserved.