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

Carta, Daniela, Pickup, DM, Knowles, JC, Ahmed, I, Smith, ME and Newport, RJ (2007) A structural study of sol-gel and melt-quenched phosphate-based glasses Journal of Non-Crystalline Solids, 353 (18-21). pp. 1759-1765.

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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, 31P solid state magic angle spinning NMR spectroscopy). Sol–gel and melt-quenched glasses appear to have a similar structure, showing similar Qn distributions and atomic correlations.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
Pickup, DM
Knowles, JC
Ahmed, I
Smith, ME
Newport, RJ
Date : 27 March 2007
DOI : 10.1016/j.jnoncrysol.2007.02.008
Copyright Disclaimer : 2007 Elsevier B.V. All rights reserved.
Uncontrolled Keywords : Biomaterials; Phosphates; Sol–gels (xerogels)
Depositing User : Jane Hindle
Date Deposited : 04 Sep 2017 08:57
Last Modified : 16 Jan 2019 18:56

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