title: Synthesis of high purity hydroxyapatite nanopowder via sol-gel combustion process.
abstract: A polymeric sol-gel combustion method has been used to synthesize nanocrystalline hydroxyapatite (HA) powder from calcium nitrate and triethyl phosphate with the addition of NH(4)OH. The sol-gel combustion process generates phase-pure nanocrystalline HA powder, as characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), and transmission electron microscopy (TEM). Sintering of the HA powder compact at 1200 degrees C for 2 h leads to a 93% theoretical dense ceramic body. This method offers an easy route for the preparation of phase-pure nanocrystalline HA powder.
authors.affiliation: Department of Chemical, Materials and Biomolecular Engineering, Institute of Materials Science, University of Connecticut, Storrs, 06269, USA.
authors.forename: Jiwen
authors.initials: J
authors.lastname: Wang
authors.forename: Leon L
authors.initials: LL
authors.lastname: Shaw
mesh_terms: D064753:Ammonium Hydroxide; D001672:Biocompatible Materials / Q000138:chemical synthesis / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry; D002152:Calorimetry, Differential Scanning; D003460:Crystallization; D017886:Durapatite / Q000138:chemical synthesis* / Q000737:chemistry; D005782:Gels; D006863:Hydrogen-Ion Concentration; D006878:Hydroxides / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000648:ultrastructure; D036103:Nanotechnology; D009566:Nitrates / Q000737:chemistry; D010755:Organophosphates / Q000737:chemistry; D010316:Particle Size; D044367:Phase Transition; D011208:Powders; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D017610:Calcium Compounds; D005782:Gels; D006878:Hydroxides; D009566:Nitrates; D010755:Organophosphates; D011208:Powders; D064753:Ammonium Hydroxide; D017886:Durapatite; C059948:calcium nitrate; C009549:triethyl phosphate