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dc.creatorMarković, Smilja
dc.creatorVeselinović, Ljiljana
dc.creatorLukić, Miodrag J.
dc.creatorKaranović, Ljiljana
dc.creatorBračko, Ines
dc.creatorIgnjatović, Nenad
dc.creatorUskoković, Dragan
dc.date.accessioned2017-06-10T15:45:07Z
dc.date.issued2011
dc.identifier.issn1748-605X (Online) 1748-6041 (Print)
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/731
dc.description.abstractPhase composition, crystal structure and morphology of biological hydroxyapatite (BHAp) extracted from human mandible bone, and carbonated hydroxyapatite (CHAp), synthesized by the chemical precipitation method, were studied by x-ray powder diffraction (XRD), Fourier transform infrared (FTIR) and Raman (R) spectroscopy techniques, combined with transmission electron microscopy (TEM). Structural and microstructural parameters were determined through Rietveld refinement of recorded XRD data, performed using the FullProf computing program, and TEM. Microstructural analysis shows anisotropic extension along the [0 0 l] crystallographic direction (i.e. elongated crystallites shape) of both investigated samples. The average crystallite sizes of 10 and 8 nm were estimated for BHAp and CHAp, respectively. The FTIR and R spectroscopy studies show that carbonate ions substitute both phosphate and hydroxyl ions in the crystal structure of BHAp as well as in CHAp, indicating that both of them are mixed AB-type of CHAp. The thermal behaviour and carbonate content were analysed using thermogravimetric and differential thermal analysis. The carbonate content of about 1 wt.% and phase transition, at near 790 °C, from HAp to β-tricalcium phosphate were determined in both samples. The quality of synthesized CHAp powder, particularly, the particle size distribution and uniformity of morphology, was analysed by a particle size analyser based on laser diffraction and field emission scanning electron microscopy, respectively. These data were used to discuss similarity between natural and synthetic CHAp. Good correlation between the unit cell parameters, average crystallite size, morphology, carbonate content and crystallographic positions of carbonate ions in natural and synthetic HAp samples was found.en
dc.format6 (2011) Art. No. 045005-Art. No. 045005
dc.languageen
dc.publisherIOP Publishing
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45004/RS//
dc.rightsrestrictedAccess
dc.sourceBiomedical Materialsen
dc.subjectbiological hydroxyapatite
dc.subjectcrystal structure
dc.subjectmorphology
dc.subjectFTIR
dc.subjectRaman spectroscopy
dc.titleSynthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphologyen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractМарковић, Смиља; Ускоковић, Драган; Игњатовић, Ненад; Брачко, Инес; Карановић, Љиљана; Лукић, Миодраг; Веселиновић, Љиљана;
dc.citation.epageArt. No. 045005
dc.identifier.doi10.1088/1748-6041/6/4/045005
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/handle/123456789/731/paper1004-728.pdf


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