română ECATERINA ANDRONESCU, CARMEN STELUŢA CIOBANU, LIVIA PALL, MARIETA COSTACHE, DANIELA PREDOI
Abstract
Bioceramic composites were obtained by combining two biocompatible components (by example- in our studies - hydroxyapatite and iron oxide nanoparticles). The preparation method determines the particle size and shape, the size distribution, the surface chemistry of the iron oxide particles and consequently their magnetic properties.
The samples were analysed by X-ray diffraction and IR spectroscopy. Their thermal behaviour was studied by thermogravimetric and thermodifferential analysis. These characterization techniques confirmed the presence of hydroxyapatite on the magnetite surface. Osteoblast cell cultures were used to determine cell proliferation, viability and cytotoxicity on interaction with the samples. The cultures displayed good in vitro behaviour.
Keywords
Nanoparticles, Iron oxide, Hydroxyapatite, Biocomposites, Cell viability, Cell culture
MARIA FICAI, ECATERINA ANDRONESCU, GEORGETA VOICU, DENISA FICAI, MĂDĂLINA GEORGIANA ALBU, ANTON FICAI
Abstract
In this work our attention was focused on the characterization of a corbicula species shell and the synthesis and characterization of collagen/mollusc shell composite materials. The mollusc shell and the composite material were characterized by XRD, SEM, FTIR and DTA-TG. It can be concluded that mollusc shell contain more than 98% of CaCO3 and less than 2% organic phase. The composite material was obtained by mixing fine milled mollusc shell and collagen in 4:1 weight ratio. The recorded SEM images of the obtained composite material exhibit a very good homogeneity; the collagen nanofibrils acting as glue between carbonate particles.
Keywords
mollusc shell, calcium carbonate, collagen, composite, bone graft
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Year
2010
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Issue
40 (4)
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Pages
359-364