Synthetical bone-like and biological hydroxyapatites: a comparative study of crystal structure and morphology.
作者： Smilja Marković , Ljiljana Veselinović , Miodrag J Lukić , Ljiljana Karanović , Ines Bračko
DOI: 10.1088/1748-6041/6/4/045005
关键词:
摘要: Phase composition, crystal structure and morphology of biological hydroxyapatite (BHAp) extracted from human mandible bone, carbonated (CHAp), synthesized by the chemical precipitation method, were studied x-ray powder diffraction (XRD), Fourier transform infrared (FTIR) Raman (R) spectroscopy techniques, combined with transmission electron microscopy (TEM). Structural microstructural parameters determined through Rietveld refinement recorded XRD data, performed using FullProf computing program, TEM. Microstructural analysis shows anisotropic extension along [0 0 l] crystallographic direction (i.e. elongated crystallites shape) both investigated samples. The average crystallite sizes 10 8 nm estimated for BHAp CHAp, respectively. FTIR R studies show that carbonate ions substitute phosphate hydroxyl in as well indicating them are mixed AB-type CHAp. thermal behaviour content analysed thermogravimetric differential analysis. about 1 wt.% phase transition, at near 790 °C, HAp to β-tricalcium quality CHAp powder, particularly, particle size distribution uniformity morphology, was a analyser based on laser field emission scanning microscopy, These data used discuss similarity between natural synthetic Good correlation unit cell parameters, size, positions samples found.
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