Composite membranes formed by sulfonated poly-ether-ether-ketone (SPEEK) and sulfonated and/or silylated poly-phenyl-sulfone ((Si,S)PPSU) were prepared. (Si,S)PPSU was used as anchor phase to reinforce membranes based on SPEEK with high degree of sulfonation, which is proton conducting but morphologically unstable. The ionomer membranes were characterized by several techniques, including high resolution thermogravimetric analysis, static and dynamic mechanical measurements, water uptake by immersion and in vapour phase. Properties of hybrid blends with 93 wt% SPEEK and 7 wt% of (Si,S)PPSU were compared to those of pure SPEEK. Thermal properties are discussed in view of ionomer composition. The presence of bulky phenyl-silanol groups leads to an evident reduction of water uptake and greatly enhanced mechanical strength

Sgreccia, E., DI VONA, M.l., Knauth, P. (2011). Hybrid composite membranes based on SPEEK and functionalized PPSU for PEM fuel cells. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 36(13), 8063-8069 [10.1016/j.ijhydene.2010.11.073].

Hybrid composite membranes based on SPEEK and functionalized PPSU for PEM fuel cells

SGRECCIA, EMANUELA;DI VONA, MARIA LUISA;
2011-01-01

Abstract

Composite membranes formed by sulfonated poly-ether-ether-ketone (SPEEK) and sulfonated and/or silylated poly-phenyl-sulfone ((Si,S)PPSU) were prepared. (Si,S)PPSU was used as anchor phase to reinforce membranes based on SPEEK with high degree of sulfonation, which is proton conducting but morphologically unstable. The ionomer membranes were characterized by several techniques, including high resolution thermogravimetric analysis, static and dynamic mechanical measurements, water uptake by immersion and in vapour phase. Properties of hybrid blends with 93 wt% SPEEK and 7 wt% of (Si,S)PPSU were compared to those of pure SPEEK. Thermal properties are discussed in view of ionomer composition. The presence of bulky phenyl-silanol groups leads to an evident reduction of water uptake and greatly enhanced mechanical strength
2011
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - FONDAMENTI CHIMICI DELLE TECNOLOGIE
Settore CHIM/05 - SCIENZA E TECNOLOGIA DEI MATERIALI POLIMERICI
English
Con Impact Factor ISI
PEMFC; Poly-ether-ether-ketone; Poly-phenyl-sulfone; Polymer blend; Silanol
Sgreccia, E., DI VONA, M.l., Knauth, P. (2011). Hybrid composite membranes based on SPEEK and functionalized PPSU for PEM fuel cells. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 36(13), 8063-8069 [10.1016/j.ijhydene.2010.11.073].
Sgreccia, E; DI VONA, Ml; Knauth, P
Articolo su rivista
File in questo prodotto:
File Dimensione Formato  
IJHE 2011.pdf

solo utenti autorizzati

Licenza: Copyright dell'editore
Dimensione 634.67 kB
Formato Adobe PDF
634.67 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/118873
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 39
  • ???jsp.display-item.citation.isi??? ND
social impact