Naslov
Study of hydrothermal transformation mechanism of cuttlefish bone into hydroxyapatite

Autori
Ivankovic, Hrvoje ; Tkalcec, Emilija ; Orlic, Sebastijan ; Ivankovic, Marica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Hybrid materials 2009 Delegate manual / - , 2009

Skup
Hybrid Materials 2009

Mjesto i datum
Tours, Francuska, 15.03.2009. - 19.03.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Hydroxyapatite; Rietveld refinement; Formation mechanism; Cuttlefish bone

Sažetak
Mechanism of hydrothermal transformation of aragonitre originated cuttlefish bones, (Sepia officinalis L., Adriatic Sea) into hydroxyapatite (HAP) is described. The mechanism of HAP formation in temperature range between 160-220°C for 1 to 48 hours was studied by quantitative X-ray diffraction using Rietveld refinement method. The diffusion controlled growth along c-axis of HAP crystals has been determined. FT-IR spectra have shown the substitution of CO3 predominately in the PO4 sites (B-type substitution). After 48h of HT treatment the CO3 in the OH sites (A-type substitution) of the structure is also observed. The microstructure of native and transformed bones was studied by scanning electron microscopy. The natural, porous and interconnected structure of bones maintaned through the HT, and HAP crystals have needle like shape.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne tehničke znanosti

POVEZANOST RADA