Phase Separated Methylated Polybenzimidazole (O‐PBI) Based Anion Exchange Membranes
Source abstract
Abstract
Methylated polybenzimidazole (O‐PBI) based anion exchange membranes with a degree of methylation of ca. 78% were prepared in the iodide, chloride, carbonate, bicarbonate, and hydroxide form. Swelling in water showed a high anisotropy for chloride and carbonate exchanged membranes and a strong plasticizing effect of water was confirmed by DMA. Carbonate and bicarbonate exchanged membranes revealed an ionomer peak around 0.25 Å−1 in SAXS measurements suggesting a phase separated morphology. Theoretical DFT calculations were used to characterize geometries and electronic structure of polymer models and interactions with different anions, and to rationalize the water uptake/swelling behavior.
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Research context
OpenAlex topics: Fuel Cells and Related Materials · Membrane-based Ion Separation Techniques · Advanced Battery Materials and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Fuel Cells Division NEXT ENERGY‐EWE Research Centre for Energy Technology Carl‐von‐Ossietzky‐Str. 15 26129 Oldenburg Germany
KIST (Korea Institute of Science and Technology) Fuel Cell Research Center Hwarangno 14‐gil 5 Seongbuk‐gu Seoul 136‐791 Republic of Korea
Department of Chemical and Biological Engineering Korea University Seoul 136‐701 Republic of Korea
Faculty of Chemistry Jagiellonian University Ingardena 3 30‐060 Krakow Poland
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