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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.


AFM image of HAP samples obtained at the temperature of 700°C. The particle size of the apatite is 40 nm. There is a horseshoe shape of the particles. Image size is 90.0 × 90.0 nm; image height is 12.2 nm.
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Fig3: AFM image of HAP samples obtained at the temperature of 700°C. The particle size of the apatite is 40 nm. There is a horseshoe shape of the particles. Image size is 90.0 × 90.0 nm; image height is 12.2 nm.

Mentions: This process continues up to a temperature of 700°C. It should be noted that the most rapid growth of crystals occurs in the temperature range of 600°C to 700°C [1-3]. The particle size of the apatite obtained by annealing at 700°C is 40 nm (Figure 3), corresponding to a particle size of apatite in native bone. There is a horseshoe shape of the particles. However, the bone apatite particles are needle shaped. The horseshoe shape is due to the application in the synthesis of drying powder in which the ends of the particles are not committed and bent under the influence of surface tension, creating a shape that resembles a horseshoe.Figure 3


Morphology and electronic structure of nanoscale powders of calcium hydroxyapatite.

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

AFM image of HAP samples obtained at the temperature of 700°C. The particle size of the apatite is 40 nm. There is a horseshoe shape of the particles. Image size is 90.0 × 90.0 nm; image height is 12.2 nm.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Fig3: AFM image of HAP samples obtained at the temperature of 700°C. The particle size of the apatite is 40 nm. There is a horseshoe shape of the particles. Image size is 90.0 × 90.0 nm; image height is 12.2 nm.
Mentions: This process continues up to a temperature of 700°C. It should be noted that the most rapid growth of crystals occurs in the temperature range of 600°C to 700°C [1-3]. The particle size of the apatite obtained by annealing at 700°C is 40 nm (Figure 3), corresponding to a particle size of apatite in native bone. There is a horseshoe shape of the particles. However, the bone apatite particles are needle shaped. The horseshoe shape is due to the application in the synthesis of drying powder in which the ends of the particles are not committed and bent under the influence of surface tension, creating a shape that resembles a horseshoe.Figure 3

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.