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Organic-inorganic nanocomposite coatings for biomedical applications (CROSBI ID 495904)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Sikirić, Maja ; Bar-Yosef, P. ; Govrin Lippman, R. ; Garti, Nissim ; Füredi-Milhofer, Helga Organic-inorganic nanocomposite coatings for biomedical applications // - / - (ur.). -, 2003. str. --x

Podaci o odgovornosti

Sikirić, Maja ; Bar-Yosef, P. ; Govrin Lippman, R. ; Garti, Nissim ; Füredi-Milhofer, Helga

engleski

Organic-inorganic nanocomposite coatings for biomedical applications

The purpose of this research is to develop novel bone implants for load-bearing applications. One possible approach is the deposition of composite coatings, consisting of polyelectrolyte multilayers and calcium phosphate, upon different solid substrates (metals, polymers, glass ceramic). Such biocompatible multilayers should be able to trigger cell response and accelerate osteointegration. In this work we report on the adsorption of amorphous calcium phosphate, (ACP) and it’ s “ in situ” phase transformation into octacalcium phosphate (OCP) and/or calcium deficient apatites (DA) on multilayers consisting of alternating layers of poly-l-lysine and poly-l-glutamic acid. PE multilayers, consisting of poly-l-lysine (PLL) and poly-l-glutamic acid (PGA), (PLL/PGA)nPLL, (n number of layers) were deposited on formvar membranes (TEM grids) as well as glass and titanium plates. On the top of the multilayers, amorphous calcium phosphate (ACP) particles were deposited as seeds, from which calcium phosphate crystals were grown “ in situ” . The samples were observed by transmission and scanning electron microscopy and characterized by EDS and X-ray powder diffraction. The results point to a novel method to coat surfaces of implant materials by depositing organic/inorganic nanocomposite systems. By carefully designing such composite systems it should be possible to effectively trigger cell growth and biomineralization and thus speed up osteointegration

nanocomposites

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Podaci o prilogu

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2003.

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objavljeno

Podaci o matičnoj publikaciji

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Podaci o skupu

11th Israel Materials Conference

poster

24.12.2003-25.12.2003

Haifa, Izrael

Povezanost rada

Kemija