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Crosslinked Organic/Inorganic Hybrid Proton Exchange Polymeric Membranes

Published online by Cambridge University Press:  01 February 2011

Maria Luisa Di Vona
Affiliation:
divona@uniroma2.it, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, Rome, RM, 00133, Italy
Debora Marani
Affiliation:
debora.marani@uniroma2.it, University of Rome Tor Vergata, Scienze e Tecnologie Chimiche, Italy
Cadia D'Ottavi
Affiliation:
d.ottavi@scienze.uniroma2.it, University of Rome Tor Vergata, Scienze e Tecnologie Chimiche, Italy
Marcella Trombetta
Affiliation:
M.Trombetta@unicampus.it, Università Campus Bio-Medico, C.I.R. Centro Interdisciplinare di Ricerca, Italy
Enrico Traversa
Affiliation:
traversa@uniroma2.it, University of Rome Tor Vergata, Scienze e Tecnologie Chimiche, Italy
Isabelle Beurroies
Affiliation:
philippe.knauth@up.univ-mrs.fr, Université de Provence, Centre St Jérome, MADIREL, France
Philippe Knauth
Affiliation:
philippe.knauth@up.univ-mrs.fr, Université de Provence, Centre St Jérome, MADIREL, France
Silvia Licoccia
Affiliation:
licoccia@uniroma2.it, University of Rome Tor Vergata, Scienze e Tecnologie Chimiche, Italy
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Abstract

A general, efficient and experimentally simple method for the synthesis of covalently crosslinked class II hybrid polymers based on PolyEtherEtherKetone (PEEK) with a high degree of sulfonation (DS = 0.8) was performed. The synthetic strategy foreseen two steps: the first one, direct sulfonation, led to the introduction of sulfonic acid groups and to the formation of sulfone bridges among repeat units. The second step, lithiation and silylation, led to the formation of covalent bonds between the organic backbone and Si(OH)3 moieties. The materials were characterized by 1H NMR Spectroscopy, ATR/FTIR Spectroscopy, Thermogravimetric Analysis (TGA) and Mass Spectrometry. Preliminary proton conduction measurements in dry conditions were performed. The introduction of silicon groups in the system improved thermal stability.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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