Structure-property behaviour during aging of sol-gel-derived silica modified with Si-H and Si-CH3 groups (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Structure-property behaviour during aging of sol-gel-derived silica modified with Si-H and Si-CH3 groups (Articolo in rivista) (literal)

Anno

• 1999-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1557/JMR.1999.0284 (literal)

Alternative label

• Sglavo, V.M.a, Diré, S.a, Ferrari, M.b (1999)
  Structure-property behaviour during aging of sol-gel-derived silica modified with Si-H and Si-CH3 groups
  in Journal of materials research
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Sglavo, V.M.a, Diré, S.a, Ferrari, M.b (literal)

Pagina inizio

• 2100 (literal)

Pagina fine

• 2106 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 14 (literal)

Rivista

• Journal of materials research (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 5 (literal)

Note

• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• a Dipto. di Ingeneria del Materiali, Università di Trento, Via Mesiano 77, I-38050 Trento, Italy; b CNR-CeFSA, Centro Fisica Stati Aggregati, Via Sommarive 14, I-38050 Povo (TN), Italy (literal)

Titolo

• Structure-property behaviour during aging of sol-gel-derived silica modified with Si-H and Si-CH3 groups (literal)

Abstract

• Unsupported films and thin rods were prepared by the sol-gel method from solutions of triethoxysilane and methyldiethoxysilane. Measurements of elastic modulus, density, glass transition temperature, and refractive index were performed at different aging times. Results showed a large increase of the elastic modulus with aging time, which was related to the progressive condensation taking place in the xerogel network, as shown by solid-state nuclear magnetic resonance (NMR). The stiffness increase was shown to correspond to higher glass transition temperature and larger density and refractive index. Different increasing rates of the physical and mechanical characteristics were observed for films and rods during aging. This behavior was related to the different loss rate of the pore liquid, which affects the network evolution in the wet gel. (literal)

Prodotto di

• Sviluppo e diagnostica ottica e spettroscopica di materiali e strutture per la fotonica (MD.P03.012.001) (Modulo)
• Istituto di fotonica e nanotecnologie (IFN) (Istituto)

Autore CNR

• MAURIZIO FERRARI (Unità di personale interno)

Incoming links:

Prodotto

• Istituto di fotonica e nanotecnologie (IFN) (Istituto)
• Sviluppo e diagnostica ottica e spettroscopica di materiali e strutture per la fotonica (MD.P03.012.001) (Modulo)

Autore CNR di

• MAURIZIO FERRARI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of materials research (Rivista)