Synthesis and Characterization of Sulfonated Poly(ether sulfone)s Containing Mesonaphthobifluorene for Polymer Electrolyte Membrane Fuel Cell
| العنوان: | Synthesis and Characterization of Sulfonated Poly(ether sulfone)s Containing Mesonaphthobifluorene for Polymer Electrolyte Membrane Fuel Cell |
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| المؤلفون: | Sang Young Lee, Soonho Lee, Dong Wan Seo, Jinseong Lim, Whan Gi Kim, Taehoon Hong, M.-D. Awlad Hossain, Youngdon Lim |
| المصدر: | Journal of Nanoscience and Nanotechnology. 14:7948-7953 |
| بيانات النشر: | American Scientific Publishers, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Fluorenes, Materials science, Condensation polymer, Polymers, Biomedical Engineering, Membranes, Artificial, Bioengineering, Ether, Chemistry Techniques, Synthetic, General Chemistry, Polymer, Tetraphenylethylene, Condensed Matter Physics, Sulfone, chemistry.chemical_compound, Electric Power Supplies, Membrane, chemistry, Nafion, Polymer chemistry, General Materials Science, Sulfones, Lewis acids and bases, Protons |
| الوصف: | The novel sulfonated poly(ether sulfone)s containing mesonaphthobifluorene (MNF) moiety were synthesized and characterized their properties. The prepared polymers have highly conjugated aromatic structure due to the MNF group which is an allotrope of carbon and one atom thick planar sheets of sp2-bonded carbon atoms. Poly(ether sulfone)s bearing tetraphenylethylene on polymer backbone were synthesized by polycondensation and followed intra-cyclization from tetraphenylethylene to form MNF by Friedel-craft reaction with Lewis acid (FeCl3). The sulfonation was performed selectively on MNF units with conc. sulfuric acid. The structural properties of the sulfonated polymers were investigated by 1H-NMR spectroscopy. The membranes were studied by ion exchange capacity (IEC), water uptake, and proton conductivity. The synthesized polymer electrolyte membranes showed better thermal and dimensional stabilities owing to the inducted highly conjugated aromatic structure in the polymer backbone. The water uptake of the synthesized membranes ranged from 23-52%, compared with 32.13% for Nafion 211 at 80 degrees C. The synthesized membranes exhibited proton conductivities (80 degrees C, RH 90%) of 74.6-100.4 mS/cm, compared with 102.7 mS/cm for Nafion 211. |
| تدمد: | 1533-4899 1533-4880 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::587a30e1d3a93619a8cc3ff57b09b328 https://doi.org/10.1166/jnn.2014.9464 |
| رقم الأكسشن: | edsair.doi.dedup.....587a30e1d3a93619a8cc3ff57b09b328 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15334899 15334880 |
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