NDLI: Two steps bulk-surface functionalization of nanoporous alumina by methyl and vinyl-silane adsorption. Evidence for oxide surface highly reactive sites creation.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Azevedo, Christophe Cenedese, Pierre Dubot, Pierre
Description	Country affiliation: France Author Affiliation: Azevedo C ( College d'Odontologie Garanciere Universite Denis Diderot, 5 rue de Garanciere, 75006, Paris, France. cazevedo@yahoo.com)
Abstract	Functionalization of a novel nanoporous monolithic alumina synthesized from amalgam is investigated. The structure is studied by X-ray diffraction, BET, MEB and IR spectroscopy, before and after chemical functionalization by trimethylethoxy silane adsorption and annealing at high temperature. These treatments retain both monolith microstructure and nanostructure while strongly improving material mechanical properties. Allyldimethoxysilane and alcohol adsorption on the annealed samples, proves that highly reactive sites are available for further polymer grafting, as demonstrated by a significant shift of allyldimethoxysilane ν(SiH) to 2,215 cm(-1) and adsorbed acetate formation. Simple quantum computations on model systems support this conclusion. Chemical processes reported in this paper, allow a nanostructured alumina monoliths functionalization to optimize ceramics-polymer bonds, and to tune new hybrid biomaterial properties.
File Format	HTM / HTML
ISSN	09574530
Issue Number	5
Volume Number	22
e-ISSN	15734838
Journal	Journal of Materials Science: Materials in Medicine
Language	English
Publisher	Springer
Publisher Date	2011-05-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Biomedical Engineering Aluminum Oxide Chemistry Nanostructures Silanes Adsorption Biocompatible Materials Ethanol Hot Temperature Materials Testing Microscopy, Electron, Scanning Silicon Spectrophotometry, Infrared Methods Journal Article
Content Type	Text
Resource Type	Article
Subject	Biomaterials Biophysics Bioengineering Biomedical Engineering

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