TITLE:
Synthesis and Characterization of Hydroxyapatite Powder by Eggshell
AUTHORS:
Himanshu Khandelwal, Satya Prakash
KEYWORDS:
Hydroxyapatite, Eggshell, Characterization, Bio-Materials, Stoichiometric Apatite
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.4 No.2,
March
11,
2016
ABSTRACT: Hydroxyapatite (HA) having chemical formula Ca10(PO4)6(OH)2, is the main chemical component of
human bone tissue (70%). This is the reason why it has been widely engaged in the dental and
non-load bearing implantations, to cope up with the bone response as a bioactive material. In this
study HA powder was synthesized by wet chemical method, using phosphoric acid (H3PO4) and
eggshells. The synthesized HA powder was characterized by X-ray diffraction analysis, Scanning
electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX) and Fourier transform
(FT-IR) spectroscopy. The Thermos gravimetric analysis (TGA-DTA) was also carried out to evaluate
the stability of the synthesized HA powder at higher temperatures. The results of the study indicate
that sintered (at 900°C) HA powder resembles the feature of pure and single apatite phase
having favourable Ca/P ratio ranging from 1.7 to 2.4.