Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate)
Membrane resistance and permselectivity for counter-ions have important roles in determining the performance of cation-exchange membranes (CEMs). In this study, PVA-based polyanions-poly(vinyl alcohol-b-sodium styrene sulfonate)-were synthesized, changing the molar percentages C-CEG of the cation-ex...
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my.um.eprints.279822022-06-24T08:22:48Z http://eprints.um.edu.my/27982/ Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) Kakihana, Yuriko Hashim, N. Awanis Mizuno, Taiko Anno, Marika Higa, Mitsuru TP Chemical technology Membrane resistance and permselectivity for counter-ions have important roles in determining the performance of cation-exchange membranes (CEMs). In this study, PVA-based polyanions-poly(vinyl alcohol-b-sodium styrene sulfonate)-were synthesized, changing the molar percentages C-CEG of the cation-exchange groups with respect to the vinyl alcohol groups. From the block copolymer, poly(vinyl alcohol) (PVA)-based CEMs, hereafter called ``B-CEMs'', were prepared by crosslinking the PVA chains with glutaraldehyde (GA) solution at various GA concentrations C-GA. The ionic transport properties of the B-CEMs were compared with those previously reported for the CEMs prepared using a random copolymer-poly(vinyl alcohol-co-2-acrylamido-2-methylpropane sulfonic acid)-hereafter called ``R-CEMs''. The B-CEMs had lower water content than the R-CEMs at equal molar percentages of the cation-exchange groups. The charge density of the B-CEMs increased as C-CEG increased, and reached a maximum value, which increased with increasing C-GA. A maximum charge density of 1.47 mol/dm(3) was obtained for a B-CEM with C-CEG = 2.9 mol% and C-GA = 0.10 vol.%, indicating that the B-CEM had almost two-thirds of the permselectivity of a commercial CEM (CMX: ASTOM Corp. Japan). The dynamic transport number and membrane resistance of a B-CEM with C-CEG = 8.3 mol% and C-GA = 0.10 vol.% were 0.99 and 1.6 omega cm(2), respectively. The B-CEM showed higher dynamic transport numbers than those of the R-CEMs with similar membrane resistances. MDPI 2021-06 Article PeerReviewed Kakihana, Yuriko and Hashim, N. Awanis and Mizuno, Taiko and Anno, Marika and Higa, Mitsuru (2021) Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate). Membranes, 11 (6). ISSN 2077-0375, DOI https://doi.org/10.3390/membranes11060452 <https://doi.org/10.3390/membranes11060452>. 10.3390/membranes11060452 |
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TP Chemical technology Kakihana, Yuriko Hashim, N. Awanis Mizuno, Taiko Anno, Marika Higa, Mitsuru Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) |
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Membrane resistance and permselectivity for counter-ions have important roles in determining the performance of cation-exchange membranes (CEMs). In this study, PVA-based polyanions-poly(vinyl alcohol-b-sodium styrene sulfonate)-were synthesized, changing the molar percentages C-CEG of the cation-exchange groups with respect to the vinyl alcohol groups. From the block copolymer, poly(vinyl alcohol) (PVA)-based CEMs, hereafter called ``B-CEMs'', were prepared by crosslinking the PVA chains with glutaraldehyde (GA) solution at various GA concentrations C-GA. The ionic transport properties of the B-CEMs were compared with those previously reported for the CEMs prepared using a random copolymer-poly(vinyl alcohol-co-2-acrylamido-2-methylpropane sulfonic acid)-hereafter called ``R-CEMs''. The B-CEMs had lower water content than the R-CEMs at equal molar percentages of the cation-exchange groups. The charge density of the B-CEMs increased as C-CEG increased, and reached a maximum value, which increased with increasing C-GA. A maximum charge density of 1.47 mol/dm(3) was obtained for a B-CEM with C-CEG = 2.9 mol% and C-GA = 0.10 vol.%, indicating that the B-CEM had almost two-thirds of the permselectivity of a commercial CEM (CMX: ASTOM Corp. Japan). The dynamic transport number and membrane resistance of a B-CEM with C-CEG = 8.3 mol% and C-GA = 0.10 vol.% were 0.99 and 1.6 omega cm(2), respectively. The B-CEM showed higher dynamic transport numbers than those of the R-CEMs with similar membrane resistances. |
format |
Article |
author |
Kakihana, Yuriko Hashim, N. Awanis Mizuno, Taiko Anno, Marika Higa, Mitsuru |
author_facet |
Kakihana, Yuriko Hashim, N. Awanis Mizuno, Taiko Anno, Marika Higa, Mitsuru |
author_sort |
Kakihana, Yuriko |
title |
Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) |
title_short |
Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) |
title_full |
Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) |
title_fullStr |
Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) |
title_full_unstemmed |
Ionic transport properties of cation-exchange membranes prepared from Poly(vinyl alcohol-b-sodium Styrene Sulfonate) |
title_sort |
ionic transport properties of cation-exchange membranes prepared from poly(vinyl alcohol-b-sodium styrene sulfonate) |
publisher |
MDPI |
publishDate |
2021 |
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http://eprints.um.edu.my/27982/ |
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1738510683804270592 |
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13.1944895 |