Title of article :
Effect of the Synthesis Parameters on the Properties of Biphasic Ca(OH) -HA Nanopowders for Tissue Engineering Applications
Author/Authors :
Ansari, Mojtaba Faculty of Biomedical Engineering - Amirkabir University of Technology, Tehran , Moztarzadeh, Fathollah Faculty of Biomedical Engineering - Amirkabir University of Technology, Tehran
Abstract :
Nanocrystalline hydroxyapatite was precipitated from calcium hydroxide and
phosphoric acid. Effects of precipitation temperature and different calcium to
phosphate ratios (Ca/P) on the obtained powders were investigated. Characterization
of the powders was performed using XRD and FTIR spectra, scanning electron
microscopy, and transmission electron microscopy. Increase in precipitation
temperature increases the size and crystallinity of obtained crystals. Samples with
Ca/P ratios more than stoichiometric ratio (1.67) had calcium hydroxide in their
structures which is suitable for dental applications. Lower precipitation temperatures
lead to lower crystallinity which is ideal for dental applications due to an increase
in calcium hydroxide release.
Keywords :
Ceramics , Chemical synthesis , Electron microscopy , Nanostructures , Xray diffraction
Journal title :
Astroparticle Physics
