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Proton-Conducting Cross-Linked Sulfonated Aromatic Polymers for Fuel Cells Application

Published online by Cambridge University Press:  01 March 2012

B. Maranesi ,
L. Pasquini ,
M. Khadhraoui ,
P. Knauth  and
M.L. Di Vona
B. Maranesi
Affiliation:
University of Roma Tor Vergata, Dip. Scienze Tecnologie Chimiche, 00133 Roma, Italy
L. Pasquini
Affiliation:
University of Roma Tor Vergata, Dip. Scienze Tecnologie Chimiche, 00133 Roma, Italy
M. Khadhraoui
Affiliation:
Aix-Marseille Univ, Laboratoire Chimie Provence, Centre St Jérôme, 13397 Marseille, France
P. Knauth
Affiliation:
Aix-Marseille Univ, Laboratoire Chimie Provence, Centre St Jérôme, 13397 Marseille, France
M.L. Di Vona
Affiliation:
University of Roma Tor Vergata, Dip. Scienze Tecnologie Chimiche, 00133 Roma, Italy
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Abstract

Thermal stability, hydration and mechanical properties of thermally cross-linked Sulfonated Aromatic Polymers (SAP) with high ionic exchange capacity (IEC) were measured and compared to untreated samples. The formation of cross-linking greatly stabilizes SAP in terms of thermal, mechanical, and hydrolytic degradation: they can resist in water even at a temperature of 145 °C with improved mechanical properties. Acid-base titration and FTIR spectra consistently indicate that SAP microstructure stabilization is related to cross-linking of the polymer chains by SO2 bridges, which is promoted by temperature.

Keywords

ion-exchange materialionic conductorpolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1384: Symposium B – Advanced Materials for Fuel Cells , 2012 , mrsf11-1384-b09-05
Copyright
Copyright © Materials Research Society 2012

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