Structural analysis of PVA-based proton conducting membranes

Martinelli, Anna,1978Chalmers tekniska högskola,Chalmers University of Technology (författare)

We have synthesized and characterized a new family of proton conducting membranes based on cross-linked poly(vinyl alcohol), PVA, and functionalized silica filler. Glutaraldehyde, GLA, was used as the cross-linking agent in order to improve chemical and thermal stabilities. The functionalization of the silica particles is such that terminal -SO 3 H groups are formed during membrane preparation, thus possibly providing additional mobile protons. We find that the crystallinity of the PVA-based membranes is enhanced by the presence of the functionalized silica particles, whereas it is reduced by means of cross-linking. The thermal stability of the ternary system PVA:GLA:silica is improved due to the additive contribution of GLA and silica. The conductivity of membranes swelled in a sulfuric acid solution was found to be of the order of 10 - 1 S cm - 1 . © 2006 Elsevier B.V. All rights reserved.

Matic, Aleksandar,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matic (författare)
Jacobsson, Per,1958Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)pjacob (författare)
Börjesson, Lars,1957Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lborje (författare)
Navarra, M.A.Universita degli Studi di Roma la Sapienza,Sapienza University of Rome (författare)
Fernicola, AUniversita degli Studi di Roma la Sapienza,Sapienza University of Rome (författare)
Panero, SUniversita degli Studi di Roma la Sapienza,Sapienza University of Rome (författare)
Scrosati, BUniversita degli Studi di Roma la Sapienza,Sapienza University of Rome (författare)
Chalmers tekniska högskolaUniversita degli Studi di Roma la Sapienza (creator_code:org_t)

Av författaren/redakt...: Martinelli, Anna ...; Matic, Aleksanda ...; Jacobsson, Per, ...; Börjesson, Lars, ...; Navarra, M.A.; Fernicola, A; visa fler...; Panero, S; Scrosati, B; visa färre...

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