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Membrane chemical degradation side-group attack

In addition to the radical attack of the end group, hydroxyl radical OH will attack the C-S and C-O-C bond in the copolymer side chain. Loss of a great number of sulfonate gronps or whole side chains would affect the proton conductivity of the membranes. Ghassemzadeh et al. studied chemical degradation of PFSA after fuel cell in sitn tests by solid-state NMR spectroscopy. The NMR spectra prove that degradation mostly takes place within the polymer side chains. ... [Pg.84]

See other pages where Membrane chemical degradation side-group attack is mentioned: [Pg.589]    [Pg.50]    [Pg.95]    [Pg.84]    [Pg.85]    [Pg.226]    [Pg.518]    [Pg.574]    [Pg.37]    [Pg.78]   
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