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Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications

Blends of PVA and 2-nitroso-1-naphtol-4-sulfonic acid (NNSA) ranging from 10 to 40 wt% were crosslinked in the presence of glutaraldehyde (GLA) to produce hybrid membranes. The structure and morphology of the hybrid membranes were studied by XRD, FE-SEM, EDX, and elemental mapping experiments. The m...

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Autores principales: Shabanpanah, Sajede, Omrani, Abdollah, Mansour Lakouraj, Moslem
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6567214/
https://www.ncbi.nlm.nih.gov/pubmed/31231174
http://dx.doi.org/10.1080/15685551.2019.1626323
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author Shabanpanah, Sajede
Omrani, Abdollah
Mansour Lakouraj, Moslem
author_facet Shabanpanah, Sajede
Omrani, Abdollah
Mansour Lakouraj, Moslem
author_sort Shabanpanah, Sajede
collection PubMed
description Blends of PVA and 2-nitroso-1-naphtol-4-sulfonic acid (NNSA) ranging from 10 to 40 wt% were crosslinked in the presence of glutaraldehyde (GLA) to produce hybrid membranes. The structure and morphology of the hybrid membranes were studied by XRD, FE-SEM, EDX, and elemental mapping experiments. The mechanical performance and thermal stability of the membranes were also examined by dynamic mechanical analysis (DMA) and thermogravimetry analysis (TGA), respectively. Increasing the concentration of NNSA resulted in the improvement of mechanical and thermal performances of the membrane. The addition of NNSA and SiO(2) to the solution of PVA makes the resultant hybrid membrane more hydrophilic, and therefore, the proton conductivity, water uptake and ion exchange capacity (IEC) improved. The highest proton conductivity value (0.18 S cm(−1) at 30 °C) was found for the PVA/GLA/NNSA (40 wt%)/SiO(2) (5 wt%) composite membrane. It was also demonstrated that the methanol permeability values decreased with increasing NNSA content.
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spelling pubmed-65672142019-06-21 Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications Shabanpanah, Sajede Omrani, Abdollah Mansour Lakouraj, Moslem Des Monomers Polym Article Blends of PVA and 2-nitroso-1-naphtol-4-sulfonic acid (NNSA) ranging from 10 to 40 wt% were crosslinked in the presence of glutaraldehyde (GLA) to produce hybrid membranes. The structure and morphology of the hybrid membranes were studied by XRD, FE-SEM, EDX, and elemental mapping experiments. The mechanical performance and thermal stability of the membranes were also examined by dynamic mechanical analysis (DMA) and thermogravimetry analysis (TGA), respectively. Increasing the concentration of NNSA resulted in the improvement of mechanical and thermal performances of the membrane. The addition of NNSA and SiO(2) to the solution of PVA makes the resultant hybrid membrane more hydrophilic, and therefore, the proton conductivity, water uptake and ion exchange capacity (IEC) improved. The highest proton conductivity value (0.18 S cm(−1) at 30 °C) was found for the PVA/GLA/NNSA (40 wt%)/SiO(2) (5 wt%) composite membrane. It was also demonstrated that the methanol permeability values decreased with increasing NNSA content. Taylor & Francis 2019-06-06 /pmc/articles/PMC6567214/ /pubmed/31231174 http://dx.doi.org/10.1080/15685551.2019.1626323 Text en © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Article
Shabanpanah, Sajede
Omrani, Abdollah
Mansour Lakouraj, Moslem
Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications
title Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications
title_full Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications
title_fullStr Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications
title_full_unstemmed Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications
title_short Fabrication and characterization of PVA/NNSA/GLA/nano-silica proton conducting composite membranes for DMFC applications
title_sort fabrication and characterization of pva/nnsa/gla/nano-silica proton conducting composite membranes for dmfc applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6567214/
https://www.ncbi.nlm.nih.gov/pubmed/31231174
http://dx.doi.org/10.1080/15685551.2019.1626323
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