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Preparation and characterisation of nanophase hydroxyapatite via self-propogating high temperature synthesis and aqueous precipitation
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Cox, Sophie C. and Mallick, Kajal K. (2011) Preparation and characterisation of nanophase hydroxyapatite via self-propogating high temperature synthesis and aqueous precipitation. In: 113th Annual Meeting of the American Ceramic Society, Materials Science and Technology 2011 Conference and Exhibition, Columbus, OH, U.S.A., Oct 16-20, 2011
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Abstract
Nano hydroxyapatite (nHAP) is known to exhibit enhanced biological response when interacting with cells. Phase pure HAP nanoparticles were synthesized by self-propagating high temperature synthesis (SHS) using citric acid and urea as fuels and aqueous precipitation with calcium nitrate and ammonium hydrogen phosphate. The effects of the critical factors governing the synthesis protocols such as pH, reaction and calcination temperatures on the stoichiometry, crystallinity, crystal size, and shape of the nano HAP powders are reported. The results indicated that the crystal sizes, similar to natural bone and teeth, varied with some agglomeration in the nanoregime of 10-80 nm. The influence of grain size, sintering temperature and density of bodies using nHAP as precursor is discussed. Microstructure, crystal structure, morphology, surface area of nHAP powders and dense bodies were investigated using XRD, SEM, TEM, DTA-TG and BET analysis. Key words: nano hydroxyapatite, SHS, precipitation, synthesis, characterisation, line broadening
| Item Type: | Conference Item (Paper) |
|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) |
| Date: | 2011 |
| Status: | Not Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Open Access |
| Conference Paper Type: | Paper |
| Title of Event: | 113th Annual Meeting of the American Ceramic Society, Materials Science and Technology 2011 Conference and Exhibition |
| Type of Event: | Conference |
| Location of Event: | Columbus, OH, U.S.A. |
| Date(s) of Event: | Oct 16-20, 2011 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/47362 |
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