Functional fluoropolymers for fuel cell membranes
| Autor: | Bruno Ameduri, Renaud Souzy |
|---|---|
| Přispěvatelé: | Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Collaboration de recherche avec le CEA these Renaud SOUZY, coll avec le CEA |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Materials science
Polymers and Plastics Perfluorinated sulfonic acid membrane 02 engineering and technology Sulfonic acid 010402 general chemistry 01 natural sciences Styrene chemistry.chemical_compound Copolymerization Polymer chemistry Materials Chemistry Copolymer Organic chemistry Fluoropolymers chemistry.chemical_classification Conductivity Membranes Organic Chemistry Chemical modification Surfaces and Interfaces Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Direct methanol fuel cell Monomer Membrane [CHIM.POLY]Chemical Sciences/Polymers chemistry Ceramics and Composites Fluoropolymer PEMFC 0210 nano-technology |
| Zdroj: | Progress in Polymer Science Progress in Polymer Science, Elsevier, 2005, 30, pp.644-687. ⟨10.1016/j.progpolymsci.2005.03.004⟩ |
| ISSN: | 0079-6700 |
| DOI: | 10.1016/j.progpolymsci.2005.03.004⟩ |
| Popis: | International audience; Various routes to synthesize functional fluoropolymers used in membranes for fuel cell applications are presented. They can be separated into three main families of alternatives. The first concerns the direct radical copolymerization of fluoroalkenes with fluorinated functional monomers. The latter are either fluorinated vinyl ethers, a,b,b-trifluorostyrenes or trifluorovinyl oxy aromatic monomers bearing sulfonic or phosphonic acids. The resulting membranes are well-known: Nafionw, Flemionw, Hyflonw, Doww, Aciplexw or BAM3Gw. The second route deals with the chemical modification of hydrogenated polymers (e.g. polyparaphenylenes) with fluorinated sulfonic acid synthons. The third alternative concerns the synthesis of FP-g-poly(M) graft copolymers where FP andMstand for fluoropolymer and monomer, respectively, obtained by activation (e.g. irradiation arising from electrons, g-rays, or ozone) of FP polymers followed by grafting of M monomers. The most used M monomer is styrene, and a further step of sulfonation on FP-g-PS leads to FP-g-PS sulfonic acid graft copolymers. Other processes such as multilayer membranes or the introduction of fillers to prepare organic/inorganic or ‘composite membranes' are reported. The electrochemical properties (ionic exchange capacity, conductivity, swelling-rate or water uptake) of membranes produced from fluoropolymers bearing sulfonic, carboxylic or phosphonic acid are presented and discussed. |
| Databáze: | OpenAIRE |
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