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Sol-gel synthesis and structural characterisation of P2O5-B2O3-Na2O glasses for biomedical applications

Carta, Daniela, Knowles, JC, Guerry, P, Smith, ME and Newport, RJ (2008) Sol-gel synthesis and structural characterisation of P2O5-B2O3-Na2O glasses for biomedical applications Journal of Materials Chemistry, 19. pp. 150-158.

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Abstract

Glasses in the system 40(P2O5)–x(B2O3)–(60 − x)(Na2O) (10 ≤ x ≤ 25 mol%) were prepared by the sol–gel technique. A mixture of mono- and diethylphosphates was used as precursor for P2O5, boric acid and sodium methoxide were used as source compounds for B2O3 and Na2O, respectively. The dried gels obtained were heat treated at 200, 300 and 400 °C. Structural development occurring during heat treatment and changes with composition were investigated using X-ray diffraction, thermal analysis, infrared spectroscopy, 11B and 31P solid state NMR. Systems with x = 20 and x = 25 mol% are amorphous up to 400 °C, whereas systems with lower B2O3 content are partially crystalline. This work extends sol–gel preparation of amorphous borophosphate systems having P2O5 as the main component.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Carta, Danielad.carta@surrey.ac.ukUNSPECIFIED
Knowles, JCUNSPECIFIEDUNSPECIFIED
Guerry, PUNSPECIFIEDUNSPECIFIED
Smith, MEUNSPECIFIEDUNSPECIFIED
Newport, RJUNSPECIFIEDUNSPECIFIED
Date : 10 November 2008
Identification Number : 10.1039/B813288G
Depositing User : Jane Hindle
Date Deposited : 01 Sep 2017 09:34
Last Modified : 01 Sep 2017 09:34
URI: http://epubs.surrey.ac.uk/id/eprint/842120

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