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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Taylor & Francis
2019
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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. |
format | Online Article Text |
id | pubmed-6567214 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Taylor & Francis |
record_format | MEDLINE/PubMed |
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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