Journal
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume 42, Issue 12, Pages 2308-2317Publisher
WILEY
DOI: 10.1002/polb.20099
Keywords
polymer electrolytes; lithium batteries; gels; poly(vinylidene fluoride) (PVdF); thermal characterization; fluoropolymers; gels
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Microporous poly(vinylidene fluoride) (PVdF) separators for lithium-ion batteries, used in liquid organic electrolytes, have been characterized with respect to the swelling phenomena on dense PVdF membranes (obtained through hot pressing). In the first and second parts of this study, we have described the swelling equilibria and swelling kinetics of dense PVdF. Here the thermal properties of PVdF gels and their irreversible modifications induced by swelling are characterized. Particular attention is paid to crystallinity modifications, polymer plasticization, and membrane degradation. (C) 2004 Wiley Periodicals, Inc.
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