P-31 solution state NMR investigation of the hydrolysis of a new alkoxide sol-gel hydroxyapatite
- Publisher:
- Trans Tech Publications
- Publication Type:
- Conference Proceeding
- Citation:
- Key Engineering Materials, 2002, pp. 75 - 78
- Issue Date:
- 2002-01
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
 | 2004003547.pdf | 1.27 MB |
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Previous work by these authors found that ageing was necessary to convert the starting precursors of calcium diethoxide [Ca(OEt)(2)] and triethyl phosphite [P(OEt)(3)] Sol-gel system to more reactive intermediates, These conclusions provided the impetus to examine an alternative phosphorous precursor that will not entail a 24-hour ageing period. The use of diethyl phosphite [HOP(OEt)(2)] as an alternate precursor it was possible to produce hydroxyapatite which did not require ageing of the Sol. [1]. The solution-state P-31 NMR spectroscopy was successfully applied to monitor the reaction during the ageing period that provided the vital characteristics of the alternate phosphorous precursor. However, no attempts were made to postulate mechanism(s) and identification of the intermediate species formed in these sol-gel systems. This report encompasses both these aspects; mechanism and identification of the reaction intermediates for P(OEt)3 and [HOP(OEt)(2)] sol-gel systems
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