Electrical storage in poly(vinylidene fluoride) based ferroelectric polymers: Correlating polymer structure to electrical breakdown strength

Jason Claude, Yingying Lu, Kun Li, Qing Wang

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

A series of poly(vinylidene fluoride) (PVDF) based ferroelectric polymes were synthesized to examine the correlation between the chemical structure and the dielectric breakdown strength. The synthesis of the ferroelectric terpolymer of vinylidene fluoride, chlorotrifluoroethylene (CTFE), and trifluoroethylene (TrFE), P(VDF-CTFE-TrFE), involved copolymerization of VDF andCTFE followed by reductive d4chlorination of CTFE. Wide-angle X-ray diffraction measurements were performed to investigate the evolution of thecrystallinity of the polymers with chemical compositions. The observed positive dependence of breakdown strength on crystallinity and modulus suggested that the electromechanical breakdown mechanism is primarily responsible for electrical failure in these polymers. It has also been also observed that the electromechanical stress is dominated by the Maxwell sress for the ferroelectric polymers with low crystalinity.

Original languageEnglish (US)
Pages (from-to)2078-2080
Number of pages3
JournalChemistry of Materials
Volume20
Issue number6
DOIs
StatePublished - Mar 25 2008

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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