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. (doi:https://doi.org/10.1039/b709955j ) (Full text available)
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.
|Subjects:||Q Science > Q Science (General)|
|Divisions:||Faculties > Sciences > School of Physical Sciences > Functional Materials Group|
|Depositing User:||Bob Newport|
|Date Deposited:||16 Jul 2008 18:41 UTC|
|Last Modified:||17 Jan 2017 12:55 UTC|
|Resource URI:||https://kar.kent.ac.uk/id/eprint/8233 (The current URI for this page, for reference purposes)|