An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane
The membrane of chitosan-grafted-poly(vinyl alcohol)/poly(vinyl alcohol) (CS-g-PVA/PVA) was investigated along with chitosan (CS), PVA, CS/PVA, and Nafion 117 membranes for transport properties of water and methanol, mechanical properties, and ionic conductivity. The ionic conductivity, σ, of the cr...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/642871 |
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| author | Panu Danwanichakul Pongchayont Sirikhajornnam |
| author_facet | Panu Danwanichakul Pongchayont Sirikhajornnam |
| author_sort | Panu Danwanichakul |
| collection | DOAJ |
| description | The membrane of chitosan-grafted-poly(vinyl alcohol)/poly(vinyl alcohol) (CS-g-PVA/PVA) was investigated along with chitosan (CS), PVA, CS/PVA, and Nafion 117 membranes for transport properties of water and methanol, mechanical properties, and ionic conductivity. The ionic conductivity, σ, of the crosslinked CS-g-PVA/PVA membrane was about 4.37 mS cm−1 and the methanol permeability, PS, was 1.8×10−7 cm2s−1. These gave the selectivity, σ/PS, of 23.95 mS·s·cm−3 compared with 16.35 mS·s·cm−3 of Nafion 117 membrane. The conductivity of the crosslinked CS-g-PVA/PVA membrane was greater than others including Nafion 117 when the membranes were saturated with methanol solution of which concentration was greater than 20%. This fact and that the mechanical properties of the wet crosslinked CS-g-PVA/PVA membrane were comparable to those of other membranes made it a promising material to be used as an electrolyte membrane in a direct methanol fuel cell. |
| format | Article |
| id | doaj-art-0dfcca30f2e647a189a6bceec1f16cea |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-0dfcca30f2e647a189a6bceec1f16cea2025-08-20T03:55:33ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/642871642871An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte MembranePanu Danwanichakul0Pongchayont Sirikhajornnam1Department of Chemical Engineering, Faculty of Engineering, Thammasat University, 99 Moo 18, Paholyothin Road, Khlong Nung, Khlong Luang, Pathumthani 12120, ThailandDepartment of Chemical Engineering, Faculty of Engineering, Thammasat University, 99 Moo 18, Paholyothin Road, Khlong Nung, Khlong Luang, Pathumthani 12120, ThailandThe membrane of chitosan-grafted-poly(vinyl alcohol)/poly(vinyl alcohol) (CS-g-PVA/PVA) was investigated along with chitosan (CS), PVA, CS/PVA, and Nafion 117 membranes for transport properties of water and methanol, mechanical properties, and ionic conductivity. The ionic conductivity, σ, of the crosslinked CS-g-PVA/PVA membrane was about 4.37 mS cm−1 and the methanol permeability, PS, was 1.8×10−7 cm2s−1. These gave the selectivity, σ/PS, of 23.95 mS·s·cm−3 compared with 16.35 mS·s·cm−3 of Nafion 117 membrane. The conductivity of the crosslinked CS-g-PVA/PVA membrane was greater than others including Nafion 117 when the membranes were saturated with methanol solution of which concentration was greater than 20%. This fact and that the mechanical properties of the wet crosslinked CS-g-PVA/PVA membrane were comparable to those of other membranes made it a promising material to be used as an electrolyte membrane in a direct methanol fuel cell.http://dx.doi.org/10.1155/2013/642871 |
| spellingShingle | Panu Danwanichakul Pongchayont Sirikhajornnam An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane Journal of Chemistry |
| title | An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane |
| title_full | An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane |
| title_fullStr | An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane |
| title_full_unstemmed | An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane |
| title_short | An Investigation of Chitosan-Grafted-Poly(vinyl alcohol) as an Electrolyte Membrane |
| title_sort | investigation of chitosan grafted poly vinyl alcohol as an electrolyte membrane |
| url | http://dx.doi.org/10.1155/2013/642871 |
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