Improving proton conductivity and ionic selectivity of porous polyolefin membranes by chitosan deposition
The paper presents a new method for modifying polyolefin membranes using chitosan deposition in order to apply them as a separator in the redox flow batteries with an aqueous electrolyte. Chitosan is deposited from an aqueous carbonic acid under high pressure of saturating carbon dioxide, which allo...
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| Veröffentlicht in: | Journal of applied polymer science 2021-07, Vol.138 (26), p.n/a |
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| container_title | Journal of applied polymer science |
| container_volume | 138 |
| creator | Zefirov, Vadim V. Sizov, Victor E. Gulin, Alexander A. Gallyamov, Marat O. |
| description | The paper presents a new method for modifying polyolefin membranes using chitosan deposition in order to apply them as a separator in the redox flow batteries with an aqueous electrolyte. Chitosan is deposited from an aqueous carbonic acid under high pressure of saturating carbon dioxide, which allows to increase the affinity of the composite membrane to aqueous electrolyte and, as a consequence, to increase the proton conductivity. In addition, the deposition of a chitosan film makes it possible to reduce the pore size, which means an increase in the ionic selectivity of the porous membrane. In the article, membranes modified with chitosan for different times were obtained. It was shown that as a result of the proposed treatment, the ionic selectivity of membranes increases from 0.2·107 ms·min/cm3 to 5·107 ms·min/cm3. |
| doi_str_mv | 10.1002/app.50619 |
| format | Article |
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Chitosan is deposited from an aqueous carbonic acid under high pressure of saturating carbon dioxide, which allows to increase the affinity of the composite membrane to aqueous electrolyte and, as a consequence, to increase the proton conductivity. In addition, the deposition of a chitosan film makes it possible to reduce the pore size, which means an increase in the ionic selectivity of the porous membrane. In the article, membranes modified with chitosan for different times were obtained. It was shown that as a result of the proposed treatment, the ionic selectivity of membranes increases from 0.2·107 ms·min/cm3 to 5·107 ms·min/cm3.</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.50619</identifier><language>eng</language><publisher>Hoboken, USA: John Wiley & Sons, Inc</publisher><subject>Aqueous electrolytes ; batteries and fuel cells ; biopolymers and renewable polymers ; Carbon dioxide ; Carbonic acid ; Chitosan ; coatings ; Deposition ; Electrolytes ; Materials science ; Membranes ; Polymers ; Polyolefins ; Pore size ; Porosity ; porous materials ; Protons ; Rechargeable batteries ; Selectivity ; Separators</subject><ispartof>Journal of applied polymer science, 2021-07, Vol.138 (26), p.n/a</ispartof><rights>2021 Wiley Periodicals LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3349-fe5e909123e89c2911ffeadafb17011aa93ea4a521e3cccf942f9ed75866a6263</citedby><cites>FETCH-LOGICAL-c3349-fe5e909123e89c2911ffeadafb17011aa93ea4a521e3cccf942f9ed75866a6263</cites><orcidid>0000-0001-7739-3074 ; 0000-0001-5671-0528 ; 0000-0003-3527-8865</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fapp.50619$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.50619$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Zefirov, Vadim V.</creatorcontrib><creatorcontrib>Sizov, Victor E.</creatorcontrib><creatorcontrib>Gulin, Alexander A.</creatorcontrib><creatorcontrib>Gallyamov, Marat O.</creatorcontrib><title>Improving proton conductivity and ionic selectivity of porous polyolefin membranes by chitosan deposition</title><title>Journal of applied polymer science</title><description>The paper presents a new method for modifying polyolefin membranes using chitosan deposition in order to apply them as a separator in the redox flow batteries with an aqueous electrolyte. 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Chitosan is deposited from an aqueous carbonic acid under high pressure of saturating carbon dioxide, which allows to increase the affinity of the composite membrane to aqueous electrolyte and, as a consequence, to increase the proton conductivity. In addition, the deposition of a chitosan film makes it possible to reduce the pore size, which means an increase in the ionic selectivity of the porous membrane. In the article, membranes modified with chitosan for different times were obtained. It was shown that as a result of the proposed treatment, the ionic selectivity of membranes increases from 0.2·107 ms·min/cm3 to 5·107 ms·min/cm3.</abstract><cop>Hoboken, USA</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/app.50619</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0001-7739-3074</orcidid><orcidid>https://orcid.org/0000-0001-5671-0528</orcidid><orcidid>https://orcid.org/0000-0003-3527-8865</orcidid></addata></record> |
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| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Aqueous electrolytes batteries and fuel cells biopolymers and renewable polymers Carbon dioxide Carbonic acid Chitosan coatings Deposition Electrolytes Materials science Membranes Polymers Polyolefins Pore size Porosity porous materials Protons Rechargeable batteries Selectivity Separators |
| title | Improving proton conductivity and ionic selectivity of porous polyolefin membranes by chitosan deposition |
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