Journal
JOURNAL OF POWER SOURCES
Volume 153, Issue 2, Pages 234-238Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2005.05.020
Keywords
PVDF; alkaline treatment; ESR; free radicals; FT-IR; FT-Raman
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Poly(vinylidene fluoride) (PVDF) membranes treated with alkaline solutions were studied by electron spin resonance (ESR), FT-IR and FT-Raman spectroscopy. Alkaline treated samples produced free radicals, the concentrations of which were calculated. The vibrational spectroscopy showed the existence of conjugated carbon double bonds in the treated membranes. The degradation mechanism was discussed. And the effect of the alkaline concentration and treating time on the structure modification were also investigated. (c) 2005 Published by Elsevier B.V.
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