Issue 45, 2007
From the journal:

Journal of Materials Chemistry

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

David M. Pickup,*a   Paul Guerry,b   Robert M. Moss,a   Jonathan C. Knowles,c   Mark E. Smithb  and  Robert J. Newporta  

* Corresponding authors

a School of Physical Sciences, University of Kent, Canterbury, UK

b Department of Physics, University of Warwick, Coventry, UK

c Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray's Inn Road, London, UK

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, 31P 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 Q0 and Q1 phosphate units, whereas that of the stabilised sol–gel glass comprises predominantly Q1 and Q2 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.

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

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Article information

DOI
https://doi.org/10.1039/B709955J
Article type
Paper
Submitted
02 Jul 2007
Accepted
17 Sep 2007
First published
25 Sep 2007

J. Mater. Chem., 2007,17, 4777-4784

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

D. M. Pickup, P. Guerry, R. M. Moss, J. C. Knowles, M. E. Smith and R. J. Newport, J. Mater. Chem., 2007, 17, 4777 DOI: 10.1039/B709955J

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