Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation
The mechanical properties of polybenzimidazole (PBI) and poly [2,5-benzimidazole] (ABPBI) membranes, possible candidates to replace Nafion as proton exchange membranes in direct methanol fuel cells (DMFC), were studied. It was observed by AFM imaging that the morphology of the ABPBI membranes strong...
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2009
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v188_n2_p379_Franceschini http://hdl.handle.net/20.500.12110/paper_03787753_v188_n2_p379_Franceschini |
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paper:paper_03787753_v188_n2_p379_Franceschini2023-06-08T15:40:28Z Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation Franceschini, Esteban Andrés Corti, Horacio Roberto AFM Elastic modulus Fuel cells Membranes Nafion Polybenzimidazole Atomic force microscopy Biomechanics Electrochemistry Formic acid Fuel cells Ion exchange membranes Mechanical properties Methanol Methanol fuels Organic acids Phosphoric acid AFM Afm imaging Benzimidazole Elastic properties Force curves Force spectroscopies High temperatures Low temperatures Mechanical behaviors Membrane electrode assemblies Methanesulphonic acids Nafion Nafion membranes Nano indentations Polybenzimidazole Polymer chains Proton exchange membranes Swelling forces Elastic moduli The mechanical properties of polybenzimidazole (PBI) and poly [2,5-benzimidazole] (ABPBI) membranes, possible candidates to replace Nafion as proton exchange membranes in direct methanol fuel cells (DMFC), were studied. It was observed by AFM imaging that the morphology of the ABPBI membranes strongly depends on the casting procedure, performed at high temperature from methanesulphonic acid and at low temperature from formic acid. The elastic moduli of the undoped and phosphoric acid doped membranes were determined using the AFM force spectroscopy technique and the differences observed with doped and undoped PBI and Nafion membranes, were discussed in terms of the electrostatic and swelling forces between polymer chains. The analysis of the force curves indicates differences in the mechanical behavior of doped PBI and ABPBI membranes compared to Nafion, which could have practical consequences on the stability of the membrane electrode assemblies. © 2009 Elsevier B.V. All rights reserved. Fil:Franceschini, E.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Corti, H.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v188_n2_p379_Franceschini http://hdl.handle.net/20.500.12110/paper_03787753_v188_n2_p379_Franceschini |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
AFM Elastic modulus Fuel cells Membranes Nafion Polybenzimidazole Atomic force microscopy Biomechanics Electrochemistry Formic acid Fuel cells Ion exchange membranes Mechanical properties Methanol Methanol fuels Organic acids Phosphoric acid AFM Afm imaging Benzimidazole Elastic properties Force curves Force spectroscopies High temperatures Low temperatures Mechanical behaviors Membrane electrode assemblies Methanesulphonic acids Nafion Nafion membranes Nano indentations Polybenzimidazole Polymer chains Proton exchange membranes Swelling forces Elastic moduli |
| spellingShingle |
AFM Elastic modulus Fuel cells Membranes Nafion Polybenzimidazole Atomic force microscopy Biomechanics Electrochemistry Formic acid Fuel cells Ion exchange membranes Mechanical properties Methanol Methanol fuels Organic acids Phosphoric acid AFM Afm imaging Benzimidazole Elastic properties Force curves Force spectroscopies High temperatures Low temperatures Mechanical behaviors Membrane electrode assemblies Methanesulphonic acids Nafion Nafion membranes Nano indentations Polybenzimidazole Polymer chains Proton exchange membranes Swelling forces Elastic moduli Franceschini, Esteban Andrés Corti, Horacio Roberto Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation |
| topic_facet |
AFM Elastic modulus Fuel cells Membranes Nafion Polybenzimidazole Atomic force microscopy Biomechanics Electrochemistry Formic acid Fuel cells Ion exchange membranes Mechanical properties Methanol Methanol fuels Organic acids Phosphoric acid AFM Afm imaging Benzimidazole Elastic properties Force curves Force spectroscopies High temperatures Low temperatures Mechanical behaviors Membrane electrode assemblies Methanesulphonic acids Nafion Nafion membranes Nano indentations Polybenzimidazole Polymer chains Proton exchange membranes Swelling forces Elastic moduli |
| description |
The mechanical properties of polybenzimidazole (PBI) and poly [2,5-benzimidazole] (ABPBI) membranes, possible candidates to replace Nafion as proton exchange membranes in direct methanol fuel cells (DMFC), were studied. It was observed by AFM imaging that the morphology of the ABPBI membranes strongly depends on the casting procedure, performed at high temperature from methanesulphonic acid and at low temperature from formic acid. The elastic moduli of the undoped and phosphoric acid doped membranes were determined using the AFM force spectroscopy technique and the differences observed with doped and undoped PBI and Nafion membranes, were discussed in terms of the electrostatic and swelling forces between polymer chains. The analysis of the force curves indicates differences in the mechanical behavior of doped PBI and ABPBI membranes compared to Nafion, which could have practical consequences on the stability of the membrane electrode assemblies. © 2009 Elsevier B.V. All rights reserved. |
| author |
Franceschini, Esteban Andrés Corti, Horacio Roberto |
| author_facet |
Franceschini, Esteban Andrés Corti, Horacio Roberto |
| author_sort |
Franceschini, Esteban Andrés |
| title |
Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation |
| title_short |
Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation |
| title_full |
Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation |
| title_fullStr |
Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation |
| title_full_unstemmed |
Elastic properties of Nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by AFM tip nano-indentation |
| title_sort |
elastic properties of nafion, polybenzimidazole and poly [2,5-benzimidazole] membranes determined by afm tip nano-indentation |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v188_n2_p379_Franceschini http://hdl.handle.net/20.500.12110/paper_03787753_v188_n2_p379_Franceschini |
| work_keys_str_mv |
AT franceschiniestebanandres elasticpropertiesofnafionpolybenzimidazoleandpoly25benzimidazolemembranesdeterminedbyafmtipnanoindentation AT cortihoracioroberto elasticpropertiesofnafionpolybenzimidazoleandpoly25benzimidazolemembranesdeterminedbyafmtipnanoindentation |
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1768546495651381248 |