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Morphology and electronic structure of nanoscale powders of calcium hydroxyapatite.

Kurgan N, Karbivskyy V, Kasyanenko V - Nanoscale Res Lett (2015)

Bottom Line: Features of morphology formation of calcium hydroxyapatite nanoparticles with an annealing temperature within 200°C to 1,100°C were determined.It is shown that the particle size of the apatite obtained that annealed 700°C is 40 nm corresponding to the particle size of apatite in native bone.The effect of dimension factor on structural parameters of calcium hydroxyapatite is manifested in a more local symmetry of the PO4 (3-) tetrahedra at nanodispersed calcium hydroxyapatite.

View Article: PubMed Central - PubMed

Affiliation: G.V. Kurdymov Institute for Metal Physics of the NAS of Ukraine, blvd. Vernadsky, 36, Kiev, 03680 Ukraine.

ABSTRACT
Atomic force microscopy, infrared spectroscopy and NMR studied morphological and physicochemical properties of calcium hydroxyapatite powders produced by changing the temperature parameters of synthesis. Features of morphology formation of calcium hydroxyapatite nanoparticles with an annealing temperature within 200°C to 1,100°C were determined. It is shown that the particle size of the apatite obtained that annealed 700°C is 40 nm corresponding to the particle size of apatite in native bone. The effect of dimension factor on structural parameters of calcium hydroxyapatite is manifested in a more local symmetry of the PO4 (3-) tetrahedra at nanodispersed calcium hydroxyapatite.

No MeSH data available.


31P-NMR spectra of compounds.
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Fig5: 31P-NMR spectra of compounds.

Mentions: To determine the effects of annealing modes on HAP samples has been used in NMR method (Figure 5). It is known that 31P-NMR line quite narrows for the reference compound (phosphoric acid), whereas in the HAP, its intensity decreases, increases its half width, and maximum shifted to higher frequencies (approximately 850 Hz).Figure 5


Morphology and electronic structure of nanoscale powders of calcium hydroxyapatite.

Kurgan N, Karbivskyy V, Kasyanenko V - Nanoscale Res Lett (2015)

31P-NMR spectra of compounds.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385053&req=5

Fig5: 31P-NMR spectra of compounds.
Mentions: To determine the effects of annealing modes on HAP samples has been used in NMR method (Figure 5). It is known that 31P-NMR line quite narrows for the reference compound (phosphoric acid), whereas in the HAP, its intensity decreases, increases its half width, and maximum shifted to higher frequencies (approximately 850 Hz).Figure 5

Bottom Line: Features of morphology formation of calcium hydroxyapatite nanoparticles with an annealing temperature within 200°C to 1,100°C were determined.It is shown that the particle size of the apatite obtained that annealed 700°C is 40 nm corresponding to the particle size of apatite in native bone.The effect of dimension factor on structural parameters of calcium hydroxyapatite is manifested in a more local symmetry of the PO4 (3-) tetrahedra at nanodispersed calcium hydroxyapatite.

View Article: PubMed Central - PubMed

Affiliation: G.V. Kurdymov Institute for Metal Physics of the NAS of Ukraine, blvd. Vernadsky, 36, Kiev, 03680 Ukraine.

ABSTRACT
Atomic force microscopy, infrared spectroscopy and NMR studied morphological and physicochemical properties of calcium hydroxyapatite powders produced by changing the temperature parameters of synthesis. Features of morphology formation of calcium hydroxyapatite nanoparticles with an annealing temperature within 200°C to 1,100°C were determined. It is shown that the particle size of the apatite obtained that annealed 700°C is 40 nm corresponding to the particle size of apatite in native bone. The effect of dimension factor on structural parameters of calcium hydroxyapatite is manifested in a more local symmetry of the PO4 (3-) tetrahedra at nanodispersed calcium hydroxyapatite.

No MeSH data available.