| Téléchargement | - Voir le manuscrit accepté : Phenyltrimethylammonium Functionalized Polysulfone Anion Exchange Membranes (PDF, 1.1 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1021/ma202681z |
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| Auteur | Rechercher : Li, Nanwen; Rechercher : Zhang, Qiang; Rechercher : Wang, Chenyi; Rechercher : Lee, Young Moo; Rechercher : Guiver, Michael D.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut de technologie des procédés chimiques et de l'environnement du CNRC
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| Format | Texte, Article |
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| Résumé | Anion exchange membrane (AEM) materials were prepared from commercial polysulfone (PSf) by functionalization with tertiary amines via lithiation chemistry. By optimizing the reaction conditions, a degree of substitution (DS) of 0.81 could be achieved without evident polymer decomposition or cross-linking. The PSf containing pendent bis-(phenyldimethylamine) substituents were then quaternized with CH3I and ion exchange reaction to provide bis(phenylthrimethylammonium) (PTMA) polymer with hydroxide-conductive properties. Flexible and tough membranes with various ion exchange capacities (IEC)s could be prepared by casting the polymers from DMAc solutions. The ionomeric membranes showed considerably lower water uptake (less than 20%), and thus dimensional swelling in water, compared with many reported AEMs. The hydroxide conductivities of the membranes were above 10 mSécm at room temperature. The unusually low water uptake and good hydroxide conductivity may be attributed to the "side-chain-type" structures of pendent functional groups, which facilitate ion transport. Although the PTMA substituents on the AEM were found to have insufficient long-term stability for alkaline fuel cell application, the investigation gives some insight and directions for polymeric designs by postfunctionalization. |
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| Date de publication | 2012-02-28 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 53058 |
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| Numéro NPARC | 19775293 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 59d57abb-2684-4c75-8ddf-70b4d5cd1b44 |
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| Enregistrement créé | 2012-04-05 |
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| Enregistrement modifié | 2020-04-21 |
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