In situ high-energy X-ray diffraction study of a bioactive calcium silicate foam immersed in simulated body fluid

FitzGerald, V. and Drake, K.O. and Jones, J.R. and Smith, M.E. and Honkimaki, V. and Buslaps, T. and Kretzschmer, M. and Newport, R.J. (2007) In situ high-energy X-ray diffraction study of a bioactive calcium silicate foam immersed in simulated body fluid. Journal of Synchrotron Radiation, 14 . pp. 492-499. ISSN 0909-0495. (Full text available)

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http://dx.doi.org/10.1107/S0909049507042173

Abstract

The method of in situ time-resolved high-energy X-ray diffraction, using the intrinsically highly collimated X-ray beam generated by the European Synchrotron Radiation Facility, is demonstrated. A specially designed cell, which allows the addition of liquid components, has been used to study the reaction mechanisms of a foamed bioactive calcia-silica sol-gel glass immersed in simulated body fluid. Analysis of the X-ray diffraction data from this experiment provides atomic distances, via the pair correlation functions, at different stages of the dissolution of the glass and of the associated calcium phosphate, and ultimately hydroxyapatite, i.e. bone mineral, formation. Hence, changes in the atomic scale structure can be analysed as a function of reaction time, giving an insight into the evolution of the structure of both the glass matrix and the hydroxyapatite surface growth.

Item Type: Article
Uncontrolled keywords: high-energy X-ray diffraction; glass structure; bioactive glass; in situ diffraction
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Bob Newport
Date Deposited: 16 Jul 2008 18:34
Last Modified: 02 Dec 2011 12:11
Resource URI: http://kar.kent.ac.uk/id/eprint/8232 (The current URI for this page, for reference purposes)
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