Polarization behavior of polyvinylidene fluoride films with the addition of reduced graphene oxide

Junwoo Lee, Sangwoo Lim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of reduced graphene oxide (RGO) addition on the dielectric and piezoelectric behavior of the polyvinylidene fluoride (PVDF) films was studied. Dielectric constant increased by four times and piezoelectric coefficient also increased twice by the addition of RGO in the PVDF films. Based on capacitance–voltage and ellipsometry measurements and the Kramers–Kronig transformation, it is concluded that the enhanced dielectric and piezoelectric properties of the PVDF/RGO films resulted from the increased orientational polarization due to a phase transition from nonpolar crystalline α phase to polar crystalline β phase in the PVDF structure.

Original languageEnglish
JournalJournal of Industrial and Engineering Chemistry
DOIs
Publication statusAccepted/In press - 2018 Jan 1

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Oxides
Graphene
Polarization
Crystalline materials
Ellipsometry
Oxide films
Permittivity
Phase transitions
polyvinylidene fluoride

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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abstract = "The effect of reduced graphene oxide (RGO) addition on the dielectric and piezoelectric behavior of the polyvinylidene fluoride (PVDF) films was studied. Dielectric constant increased by four times and piezoelectric coefficient also increased twice by the addition of RGO in the PVDF films. Based on capacitance–voltage and ellipsometry measurements and the Kramers–Kronig transformation, it is concluded that the enhanced dielectric and piezoelectric properties of the PVDF/RGO films resulted from the increased orientational polarization due to a phase transition from nonpolar crystalline α phase to polar crystalline β phase in the PVDF structure.",
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AU - Lim, Sangwoo

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AB - The effect of reduced graphene oxide (RGO) addition on the dielectric and piezoelectric behavior of the polyvinylidene fluoride (PVDF) films was studied. Dielectric constant increased by four times and piezoelectric coefficient also increased twice by the addition of RGO in the PVDF films. Based on capacitance–voltage and ellipsometry measurements and the Kramers–Kronig transformation, it is concluded that the enhanced dielectric and piezoelectric properties of the PVDF/RGO films resulted from the increased orientational polarization due to a phase transition from nonpolar crystalline α phase to polar crystalline β phase in the PVDF structure.

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