CINECA IRIS Institutional Research Information System
IRIS è il sistema di gestione integrata dei dati della ricerca (persone, progetti, pubblicazioni, attività) adottato dall'Università degli Studi di Torino.
AperTO è l'archivio istituzionale Open Access destinato a raccogliere, rendere visibile e conservare la produzione scientifica dell'Università degli Studi di Torino.
EnglishThe adsorption of CH3OH at 303 K on a commercial sol-gel bioactive glass and on very simple model systems (either purely siliceous or prepared by introducing at the surface a controlled amount of calcium) has been studied in order to investigate the role of Ca species on the surface reactivity of bioactive glass 58S and of a Ca-doped silica (ACa8). The presence of calcium species has been found to induce a marked reactivity at the silica surface. The interaction of methanol is not fully vacuum reversible (neither at RT or at 423 K) on both calcium-containing systems (58S and ACa8), whereas it is almost completely reversible in the case of the all-silica system. The onset of a methoxylation process, besides SiOH/CH3OH H-bonding that is the only interaction operative at a pure silica surface, is suggested in the case of calcium-containing surfaces.
| Titolo: | Interfacial properties of silica-based materials in relation to their bioactivity studied through the adsorption of small (bio)molecules. Adsorption CH3OH |
| Autori Riconosciuti: | |
| Autori: | V. Bolis; V. Aina; G. Magnacca; C. Morterra. |
| Data di pubblicazione: | 2004 |
| Abstract: | The adsorption of CH3OH at 303 K on a commercial sol-gel bioactive glass and on very simple model systems (either purely siliceous or prepared by introducing at the surface a controlled amount of calcium) has been studied in order to investigate the role of Ca species on the surface reactivity of bioactive glass 58S and of a Ca-doped silica (ACa8). The presence of calcium species has been found to induce a marked reactivity at the silica surface. The interaction of methanol is not fully vacuum reversible (neither at RT or at 423 K) on both calcium-containing systems (58S and ACa8), whereas it is almost completely reversible in the case of the all-silica system. The onset of a methoxylation process, besides SiOH/CH3OH H-bonding that is the only interaction operative at a pure silica surface, is suggested in the case of calcium-containing surfaces. |
| Editore: | Edited by A. Ravaglioli, A. Krajewski. |
| Titolo del libro: | Materials for tissues engineering. Chemistry and microstructure: the role for ceramics. |
| Volume: | unico |
| Pagina iniziale: | 169 |
| Pagina finale: | 175 |
| Nome del convegno: | 9th meeting and Seminar on ceramics, cells and tissues |
| Luogo del convegno: | Faenza |
| Anno del convegno: | september 28 - october 1 |
| Appare nelle tipologie: | 04A-Conference paper in volume |
File in questo prodotto:
Copyright © 2019