A structural study of sol-gel and melt-quenched phosphate-based glasses

Carta, Daniela and Pickup, David M. and Knowles, Jonathan C. and Ahmed, Ifty and Smith, Mark E. and Newport, Robert J. (2007) A structural study of sol-gel and melt-quenched phosphate-based glasses. Journal of Non-Crystalline Solids, 353 (18-21). pp. 1759-1765. ISSN 0022-3093. (Access to this publication is restricted)

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Abstract

Phosphate-based glasses have recently attracted much interest as a new generation of biomaterials because of their ability to react and dissolve in the physiological environment and eventually to be replaced by regenerated hard or soft tissue. A series of phosphate-based glasses containing 45 mol% P2O5 and various amounts of CaO and Na2O were synthesized by sol-gel and melt-quenching techniques. A comparison between the structure of the sol-gel glass and the structure of the analogous melt-quenched glasses has been undertaken. A broad-based characterization approach combining different techniques has been used to investigate the short-range structure of the glasses and the effect of adding modifier oxides to the network structure (conventional and high energy X-ray diffraction, infra-red spectroscopy, (31)p solid state magic angle spinning NMR spectroscopy). Sol-gel and melt-quenched glasses appear to have a similar structure, showing similar Q(n) distributions and atomic correlations.

Item Type: Article
Uncontrolled keywords: biomaterials; phosphates; sol-gels (xerogels)
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Suzanne Duffy
Date Deposited: 31 Mar 2008 08:07
Last Modified: 03 Jun 2014 15:10
Resource URI: http://kar.kent.ac.uk/id/eprint/2518 (The current URI for this page, for reference purposes)
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