Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres
Nanostructured apatite has been widely used as a bone substitute material due to its close resemblance to human bone mineral. To further mimic biological apatites, multiple ions doped nonstoichiometric nanoapatite has been studied. A nanosized apatite (NAp-2) containing Mg (1.09 wt%), Na (0.15 wt%),...
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my.utm.521102019-01-28T04:30:44Z http://eprints.utm.my/id/eprint/52110/ Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres Jamuna Thevi, Kalitheertha Abdul Kadir, Mohammed Rafiq Hermawan, Hendra QH Natural history Nanostructured apatite has been widely used as a bone substitute material due to its close resemblance to human bone mineral. To further mimic biological apatites, multiple ions doped nonstoichiometric nanoapatite has been studied. A nanosized apatite (NAp-2) containing Mg (1.09 wt%), Na (0.15 wt%), K (0.008 wt%) and CO3 2- (5.18 wt%) was synthesized by a wet precipitation technique. The presence of these ions in NAp-2 was detected using ICP. Broad diffraction peaks of XRD results indicated the presence of nanocrystalline phase-pure NAp-2. The primary particle size of the resulted powder was ~ 20 nm, typical of bone crystal size, estimated using Scherrer's equation. Based on CHN results, the NAp-2 powders showed a total loss of 51 and 78% of carbonate ions when heat-treated at 900°C in both CO2 and air atmospheres, respectively. This indicates that the heat-treatment in CO2 flux has reduced the carbonate ions lost from the NAp-2. A highly crystalline HA phase was formed in the ionic doped NAp-2 without secondary phases, indicating a thermal stability of this powder at 900°C in CO2 and air atmospheres. Thus, this study demonstrated that a phase-pure multiple ions doped nanoapatite was synthesized using a wet precipitation technique. Trans Tech Publications 2014 Article PeerReviewed Jamuna Thevi, Kalitheertha and Abdul Kadir, Mohammed Rafiq and Hermawan, Hendra (2014) Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres. Advanced Materials Research, 925 . pp. 77-81. ISSN 1022-6680 http://dx.doi.org/10.4028/www.scientific.net/AMR.925.77 DOI: 10.4028/www.scientific.net/AMR.925.77 |
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QH Natural history Jamuna Thevi, Kalitheertha Abdul Kadir, Mohammed Rafiq Hermawan, Hendra Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres |
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Nanostructured apatite has been widely used as a bone substitute material due to its close resemblance to human bone mineral. To further mimic biological apatites, multiple ions doped nonstoichiometric nanoapatite has been studied. A nanosized apatite (NAp-2) containing Mg (1.09 wt%), Na (0.15 wt%), K (0.008 wt%) and CO3 2- (5.18 wt%) was synthesized by a wet precipitation technique. The presence of these ions in NAp-2 was detected using ICP. Broad diffraction peaks of XRD results indicated the presence of nanocrystalline phase-pure NAp-2. The primary particle size of the resulted powder was ~ 20 nm, typical of bone crystal size, estimated using Scherrer's equation. Based on CHN results, the NAp-2 powders showed a total loss of 51 and 78% of carbonate ions when heat-treated at 900°C in both CO2 and air atmospheres, respectively. This indicates that the heat-treatment in CO2 flux has reduced the carbonate ions lost from the NAp-2. A highly crystalline HA phase was formed in the ionic doped NAp-2 without secondary phases, indicating a thermal stability of this powder at 900°C in CO2 and air atmospheres. Thus, this study demonstrated that a phase-pure multiple ions doped nanoapatite was synthesized using a wet precipitation technique. |
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Article |
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Jamuna Thevi, Kalitheertha Abdul Kadir, Mohammed Rafiq Hermawan, Hendra |
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Jamuna Thevi, Kalitheertha Abdul Kadir, Mohammed Rafiq Hermawan, Hendra |
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Jamuna Thevi, Kalitheertha |
title |
Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres |
title_short |
Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres |
title_full |
Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres |
title_fullStr |
Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres |
title_full_unstemmed |
Chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in CO2 and air atmospheres |
title_sort |
chemical and thermal stability of multiple ions doped nonstoichiometric nanoapatite heat-treated in co2 and air atmospheres |
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Trans Tech Publications |
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2014 |
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http://eprints.utm.my/id/eprint/52110/ http://dx.doi.org/10.4028/www.scientific.net/AMR.925.77 |
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