Comparative studies on synthesis and sintering studies of biologically derived hydroxyapatite from Capria hircus (Goat) and Bos primigenius (Bovine)

Abstract

Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) is a major constituent of bone graft materials and has been widely used for bio-medical applications due to its high surface-to-volume ratio, biomimetic morphologies and biocompatibility. Here HAp has been synthesized from naturally occurring biological specimens. In this study HAp has been obtained from Capria hircus(Goat) and Bos primigenius(Bovine). These obtained bones were washed using distilled water and 1M NaOH solution. The washed bones were allowed for some pre heat treatments. The bones were crushed using mortar pestle and ball-milled. The obtained bone powders were calcinated at 800 °C. The phase compositions of the samples were studied using X-ray diffraction studies (XRD), Scanning Electron Microscope (SEM) and Fourier-Transform Infrared Spectroscopy (FT-IR). The thermal analysis of the samples was also studied using Thermo gravimetric analysis (TGA-DTA). The synthesized powders were compacted using uniaxial hydraulic press into 10 mm diameter pellets. The pellets were then sintered at 1100 °C and 1200 °C. The density of the as dried pellets and sintered pellets were done. This study reveals that the pure HAp can be synthesized from bone-waste materials.