Kinetics of Hydroxyapatite Formation from Cuttlefish Bones (CROSBI ID 535695)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Ivanković, Hrvoje ; Orlić, Sebastijan ; Tkalčec, Emilija ; Gallego Ferrer, Gloria
engleski
Kinetics of Hydroxyapatite Formation from Cuttlefish Bones
Hydrothermal method of synthesis hydroxyapatite scaffolds from aragonitic cuttlefish bones, (Seppia Officinalis L., Adriatic Sea), at temperatures 180°C and 200°C for 1 to 48 hours is described. The phase composition of the bone and converted samples were examined by: X-ray diffraction and Fourier transform infrared spectroscopy. The rate of transformation was studied by quantitative X-ray diffraction using Rietveld refinement method, and Johnson-Mehl-Avrami approach was used to follow the transformation kinetics. The mechanism of hydroxyapatite formation could be defined as diffusion controlled growth of HAp crystals with the dominant growth along to the c-axis. FTIR spectroscopy determined B-type substitution of CO32– groups, (i.e., on the tetrahedral PO43– sites) into the structure. The microstructure of native and transformed bones was studied by scanning electron microscopy. The natural, porous and interconnected structure of bones maintained through the hydrothermal treatment, and hydroxyapatite crystals have needle like shape.
hydroxyapatite; cuttlefish; XRD; FTIR; Kinetics
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Podaci o prilogu
942-947.
2007.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 10th International Conference of the European Ceramic Society
Heinrich, J.G., Aneziris, C.G.
Baden-Baden: Goeller Verlag GmbH
3-87264-022-4
Podaci o skupu
10th International Conference and Exhibition of the European Ceramic Society
poster
17.06.2007-21.06.2007
Berlin, Njemačka