Proton exchange membranes based on semi-interpenetrating polymer networks of fluorine-containing polyimide and Nafion®
作者： Haiyan Pan , Hongting Pu , Decheng Wan , Ming Jin , Zhihong Chang
DOI: 10.1016/J.JPOWSOUR.2009.11.116
关键词: Chemical engineering 、 Proton exchange membrane fuel cell 、 Polymer 、 Materials science 、 Interpenetrating polymer network 、 Polyimide 、 Polymer chemistry 、 Membrane 、 Polymerization 、 Thermogravimetric analysis 、 Nafion
摘要: Abstract A series of reinforced composite membranes as proton exchange were prepared from Nafion ® 212 and crosslinkable fluorine-containing polyimides (FPI). FPI was the polymerization 4,4′-(hexafluoroisopropylidene) diphthalic anhydride (6FDA), 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl (TFMB), 3,5-diaminobenzoic acid (DABA). Then thermally crosslinked during membrane preparation formed semi-interpenetrating polymer networks (semi-IPN) structure in membranes. The thermal properties characterized by thermogravimetric analysis. crosslinking density evaluated gel fraction. These showed excellent stabilities good oxidative stabilities. Compared with 212, obtained displayed much improved mechanical dimensional tensile strength more than twice that 212. exhibited high conductivity, which ranged 2.3 × 10 −2 S cm −1 to 9.1 × 10 . All an increase conductivity temperature elevation.
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