Properties of hydroxyapatite produced by annealing of bovine bone

Ooi, C.Y. and Abd Shukor, Mohd Hamdi and Ramesh, S. (2007) Properties of hydroxyapatite produced by annealing of bovine bone. Ceramics International, 33 (7). pp. 1171-1177. ISSN 0272-8842,

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The properties of porous hydroxyapatite (HA) bioceramic produced by heat treatment (annealing) of bovine bone were evaluated over temperatures between 400 T and 1200 T. The annealed body was characterized by thermal analysis (thermogravimetric analysis (TG)/differential thermal analysis (DTA)), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX) and Fourier transformed infrared (FTIR) spectroscopy. The XRD results showed that the annealing process enhanced the crystallinity of HA phase in the bone matrix particularly when annealed above 700 degrees C. There was no secondary phase formation in bones annealed between 600 degrees C and 1000 T. However, decomposition of HA to P-tricalcium phosphate (TCP) was observed for samples heat-treated at 1100 degrees C and 1200 degrees C. The FTIR spectra and the TG/DTA thermogram of as-received bovine bone indicated the presence of organic compounds, which upon annealing at temperatures above 600 T was completely removed from the matrices. Bovine bone annealed between 800 degrees C and 1000 degrees C revealed the characteristics of a natural bone with the interconnecting pore network being retained in the structure. (c) 2006 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type: Article
Uncontrolled Keywords: bioceramics bovine bone hydroxyapatite annealing mechanical-properties physicochemical characterization natural bone phosphate ceramics composites growth glass grinding
Subjects: T Technology > TS Manufactures
Divisions: Faculty of Engineering
Depositing User: Mr. Mohammed Salim Abd Rahman
Date Deposited: 10 Jul 2013 00:44
Last Modified: 01 Oct 2021 03:59

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