New sol-gel synthesis of a (CaO)(0.3)( Na2O)(0.2)(P2O5)(0.5) bioresorbable glass and its structural characterisation

Pickup, David M. and Guerry, Paul and Moss, Rob M. and Knowles, Jonathan C. and Smith, Mark E. and Newport, Robert J. (2007) New sol-gel synthesis of a (CaO)(0.3)( Na2O)(0.2)(P2O5)(0.5) bioresorbable glass and its structural characterisation. Journal of Materials Chemistry, 17 (45). pp. 4777-4784. ISSN 0959-9428. (Full text available)

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http://dx.doi.org/10.1039/b709955j

Abstract

An improved sol-gel synthesis of (CaO)(0.3)(Na2O)(0.2)(P2O5)(0.5) bioresorbable glass has been developed. The structures of both the dried gel and the stabilised sol-gel glass have been characterised using high-energy XRD, P-31 MAS NMR and FT-IR spectroscopy. The structure of the analogous melt-quench prepared glass has also been studied for comparison. The results show that the dried gel has a structure consisting of mainly Q(0) and Q(1) phosphate units, whereas that of the stabilised sol-gel glass comprises predominantly Q(1) and Q(2) units. Furthermore, it is demonstrated that the structure of the sol-gel glass is similar to that of its melt-quenched counterpart except for the presence of hydroxyl groups which terminate the phosphate chains, reducing the connectivity of the network.

Item Type: Article
Subjects: Q Science > Q Science (General)
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Bob Newport
Date Deposited: 16 Jul 2008 18:41
Last Modified: 30 May 2014 15:56
Resource URI: http://kar.kent.ac.uk/id/eprint/8233 (The current URI for this page, for reference purposes)
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