Synthesis and stability of potassium/carbonate co-substituted hydroxyapatites

John Morrison Whyte, Daniel James Hadden, Iain Ronald Gibson, Jan Skakle

Research output: Chapter in Book/Report/Conference proceedingChapter

4 Citations (Scopus)

Abstract

A systematic study of the stability of potassium/carbonate co-substituted hydroxyapatite has been carried out, with samples synthesized by aqueous precipitation according to the charge-balanced mechanism:

Ca10-xKx(PO4)(6-x)(CO3)(x)(OH)(2)

Samples up to x=1.0 were prepared and their stability determined by heating at a range of temperatures in both air and CO2 environments. Results showed that whilst samples up to x=1.0 can be prepared phase-pure, the stability of these materials is strongly dependent on sintering temperature with the full range of compositions only being stable at 600 degrees C in CO2. The c unit cell parameter increases linearly with x, and, for a fixed composition, decreases linearly with temperature indicating loss of carbonate from the A-site. FTIR showed that samples contained carbonate at both A- and B-sites, and that carbonate content increased with x.

Original languageEnglish
Title of host publicationBioceramics
EditorsGuy Daculsi, Pierre Layrolle
Place of PublicationZurich, Switzerland
PublisherTrans Tech Publications Ltd
Pages207-210
Number of pages4
Volume20
Edition1-2
ISBN (Print)087849457X, 978-0878494576
DOIs
Publication statusPublished - 30 Mar 2008
Event20th International Symposium on Ceramics in Medicine - Nantes, France
Duration: 24 Oct 200726 Oct 2007

Publication series

NameKey Engineering Materials
PublisherTrans Tech Publications Ltd
Volume361-363
ISSN (Print)1013-9826

Conference

Conference20th International Symposium on Ceramics in Medicine
CountryFrance
CityNantes
Period24/10/0726/10/07

Keywords

  • hydroxyapatite
  • potassium
  • carbonate
  • substitution
  • X-ray diffraction

Cite this

Whyte, J. M., Hadden, D. J., Gibson, I. R., & Skakle, J. (2008). Synthesis and stability of potassium/carbonate co-substituted hydroxyapatites. In G. Daculsi, & P. Layrolle (Eds.), Bioceramics (1-2 ed., Vol. 20, pp. 207-210). (Key Engineering Materials; Vol. 361-363). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.361-363.207