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Microwave assisted synthesis and characterization of magnesium substituted calcium phosphate bioceramics

Khan, Nida Iqbal and Ijaz, Kashif and Zahid, Muniza and Khan, Abdul Samad (2015) Microwave assisted synthesis and characterization of magnesium substituted calcium phosphate bioceramics. Materials Science And Engineering C, 56 . pp. 286-293. ISSN 9284-931

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Official URL: http://dx.doi.org/10.1016/j.msec.2015.05.025

Abstract

Hydroxyapatite is used extensively in hard tissue repair due to its biocompatibility and similarity to biological apatite, the mineral component of bone. It differs subtly in composition from biological apatite which contains other ions such as magnesium, zinc, carbonate and silicon (believed to play biological roles). Traditional methods of hydroxyapatite synthesis are time consuming and require strict reaction parameter control. This paper outlines synthesis of magnesium substituted hydroxyapatite using simple microwave irradiation of precipitated suspensions. Microwave irradiation resulted in a drastic decrease in ageing times of amorphous apatitic phases. Time taken to synthesize hydroxyapatite (which remained stable upon heat treatment at 900°C for 1 h) reduced twelve folds (to 2 h) as compared to traditionally required times. The effects of increasing magnesium concentration in the precursors on particle size, surface area, phase-purity, agglomeration and thermal stability, were observed using scanning electron microscopy, BET surface area analysis, X-ray diffraction and photo acoustic Fourier transform infra-red spectroscopy. Porous agglomerates were obtained after a brief heat-treatment (1 h) at 900°C.

Item Type:Article
Uncontrolled Keywords:bioceramics, calcium phosphates, magnesium substitution, microwave synthesis
Subjects:A General Works
ID Code:58556
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:04 May 2017 11:15

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