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Functionally graded tricalcium phosphate/fluoroapatite composites

Wong, Lydia Helena, Tio, Betty, & Miao, Xigeng (2002) Functionally graded tricalcium phosphate/fluoroapatite composites. Materials Science and Engineering C: Biomimetic Materials, Sensors and Systems, 20(1-2), pp. 111-115.

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Abstract

This study was conducted to prepare fluorine-substituted apatite (FA)/beta-tricalcium phosphate (h-TCP) composites to combine the biostability of FA with the bioresorbability of h-TCP. The FAwas prepared for the first time by mixing hydroxyapatite (HA) with aluminium fluoride (coded as AF). On the other hand, the h-TCP was prepared from a mixture of HA and CaHPO4 (calcium hydrogen phosphate). The dissolution behaviour of the composites was tested using a 10-wt.% citric acid solution. Scanning electron microscopy (SEM) indicated that h-TCP dissolved in the citric acid much faster than FA, resulting in macropores among the FA matrix. In addition to bulk FA/h-TCP composites, novel functionally gradient FA/h-TCP composites were also prepared by varying the particle size and the volume content of the h-TCP granules. The functionally gradient FA/h-TCP composites could be used to design implants.

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18 citations in Scopus
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11 citations in Web of Science®

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ID Code: 7117
Item Type: Journal Article
Additional Information: For more information, please refer to the journal's website (see link) or contact the author. Author contact details: x.miao@qut.edu.au
Keywords: Fluoroapatite, Hydroxyapatite, Tricalcium phosphate, Ceramic composites, Functionally gradient materials
DOI: 10.1016/S0928-4931(02)00020-6
ISSN: 0928-4931
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomaterials (090301)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2002 Elsevier
Deposited On: 20 Apr 2007
Last Modified: 15 Jan 2009 17:28

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