Enhanced electromechanical properties in all-polymer percolative composites

Jiang Yu Li, Cheng Huang, Qiming Zhang

    Research output: Contribution to journalArticle

    90 Scopus citations

    Abstract

    The enhanced electrostriction and dielectric constant in an all-polymer percolative composite consisting of poly(vinylidene fluoride-trifluoroethylene- chlorotrifluoroethylene) [P(VDF-TrFE-CTFE)] terpolymer and polyaniline (PANI) conductive particles were discussed. The dielectric constant and dielectric loss tangent of the composite in excellent agreement with experiment were calculated using a self-consistent approach. It was demonstrated that the electrostriction enhancement was due to the electric field fluctuation in P(VDF-TrFE-CTFE) matrix, which becomes dominant when the dielectric constant of the second phase was much larger than that of the matrix. Breakdown field of the composite was estimated using inhomogeneous field distribution in matrix.

    Original languageEnglish (US)
    Pages (from-to)3124-3126
    Number of pages3
    JournalApplied Physics Letters
    Volume84
    Issue number16
    DOIs
    StatePublished - Apr 19 2004

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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