Catauro, Michelina and Raucci, Mariagrazia and Ausanio, Giovanni and Ambrosio, Luigi (2007) Sol-gel synthesis, characterization and bioactivity of poly(ether-imide)/TiO2 hybrid materials. [Pubblicazione in rivista scientifica]

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Tipologia del documento:	Pubblicazione in rivista scientifica
Lingua:	English
Titolo:	Sol-gel synthesis, characterization and bioactivity of poly(ether-imide)/TiO2 hybrid materials
Autori:	Autore Email Catauro, Michelina [non definito] Raucci, Mariagrazia [non definito] Ausanio, Giovanni [non definito] Ambrosio, Luigi [non definito]
Autore/i:	M. Catauro, M. G. Raucci, G. Ausanio, L. Ambrosio
Data:	2007
Numero di pagine:	8
Dipartimento:	Scienze fisiche
Titolo del periodico:	JOURNAL OF APPLIED BIOMATERIALS & BIOMECHANICS
Data dell'evento:	2007-JAN-APR
Data:	2007
Volume:	5
Intervallo di pagine:	pp. 41-48
Numero di pagine:	8
Depositato il:	20 Ott 2010 08:33
Ultima modifica:	30 Apr 2014 19:42
URI:	http://www.fedoa.unina.it/id/eprint/6606

Abstract

Novel organic-inorganic hybrid materials were synthesized by the sol-gel method from a multicomponent solution containing titanium butoxide, 6 weight \% (wt\%) or 12 wt\% poly(ether-imide) (PEI), water and chloroform. The structure of the interpenetrating network is realized by hydrogen bonds between the Ti-OH group (H-donator) in the sol-gel intermediate species and the carboxylic group (H-acceptor) in the repeating units of the polymer. By Fourier transform infrared (FTIR) analysis the presence of hydrogen bonds between organic-inorganic components of the hybrid materials were proved. The morphology of the hybrid materials was studied by scanning electron microscopy (SEM). The structure of a molecular level dispersion was disclosed by an atomic force microscope (AFM), pore size distribution and surface measurements. The AFM and SEM analyzes confirmed that the PEI/TiO2 samples can be considered homogenous organic/inorganic hybrid materials because in both the compositions studied the average domains were less than 400 nm in size. The bioactivity of the synthesized hybrid materials was demonstrated by the formation of a layer of hydroxyapatite on the surface of the PEI/TiO2 samples soaked in a fluid simulating the composition of human blood plasma (SBF), demonstrated by SEM and energy dispersive spectroscopy (EDS) microscopy.

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