Effect of electric field on the infrared spectrum of a ferroelectric poly(vinylidene fluoride-co-hexafluoropropylene) film

Hayato Isoda, Yukio Furukawa

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    We have used infrared spectroscopy to study electric-field induced motions of polymer chains in a ferroelectric uniaxially drawn film of poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] (molar ratio, 1:0.18) consisting mainly of the polar crystalline β phase. We analyzed the observed spectra under the C2v symmetry of an infinite poly(vinylidene fluoride) (PVDF) chain. The changes in intensity of the a1 bands (2979, 1432, 1280, and 842 cm-1), b1 bands (1073 cm-1), and b2 bands (3017, 1168, and 880 cm-1) showed butterfly-shaped hysteresis loops characteristic of ferroelectricity when the electric field was varied from 1.4 to -1.4 MV/cm. The changes in intensity of the a1 and b2 bands with transition dipole moments perpendicular to the polymer chain were large, whereas those of the b1 bands with transition dipole moments parallel to the polymer chain were small. The changes in intensity of the a1 and b2 bands were mainly attributed to the inversion of the polymer chain around the polymer axis. On the other hand, the changes in intensity of the b1 band were attributed to the motion of a polar crystallite.

    Original languageEnglish
    Pages (from-to)12-16
    Number of pages5
    JournalVibrational Spectroscopy
    Volume78
    DOIs
    Publication statusPublished - 2015

    Fingerprint

    Ferroelectric materials
    Polymers
    Electric fields
    Infrared radiation
    Dipole moment
    Ferroelectricity
    Hysteresis loops
    Infrared spectroscopy
    polyvinylidene fluoride
    Crystalline materials

    Keywords

    • Ferroelectricity
    • Infrared spectroscopy
    • Poly(vinylidene fluoride-co-hexafluoropropylene)
    • Polymers

    ASJC Scopus subject areas

    • Spectroscopy

    Cite this

    @article{648cbd22328f46158190de302bec5018,
    title = "Effect of electric field on the infrared spectrum of a ferroelectric poly(vinylidene fluoride-co-hexafluoropropylene) film",
    abstract = "We have used infrared spectroscopy to study electric-field induced motions of polymer chains in a ferroelectric uniaxially drawn film of poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] (molar ratio, 1:0.18) consisting mainly of the polar crystalline β phase. We analyzed the observed spectra under the C2v symmetry of an infinite poly(vinylidene fluoride) (PVDF) chain. The changes in intensity of the a1 bands (2979, 1432, 1280, and 842 cm-1), b1 bands (1073 cm-1), and b2 bands (3017, 1168, and 880 cm-1) showed butterfly-shaped hysteresis loops characteristic of ferroelectricity when the electric field was varied from 1.4 to -1.4 MV/cm. The changes in intensity of the a1 and b2 bands with transition dipole moments perpendicular to the polymer chain were large, whereas those of the b1 bands with transition dipole moments parallel to the polymer chain were small. The changes in intensity of the a1 and b2 bands were mainly attributed to the inversion of the polymer chain around the polymer axis. On the other hand, the changes in intensity of the b1 band were attributed to the motion of a polar crystallite.",
    keywords = "Ferroelectricity, Infrared spectroscopy, Poly(vinylidene fluoride-co-hexafluoropropylene), Polymers",
    author = "Hayato Isoda and Yukio Furukawa",
    year = "2015",
    doi = "10.1016/j.vibspec.2015.03.001",
    language = "English",
    volume = "78",
    pages = "12--16",
    journal = "Vibrational Spectroscopy",
    issn = "0924-2031",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Effect of electric field on the infrared spectrum of a ferroelectric poly(vinylidene fluoride-co-hexafluoropropylene) film

    AU - Isoda, Hayato

    AU - Furukawa, Yukio

    PY - 2015

    Y1 - 2015

    N2 - We have used infrared spectroscopy to study electric-field induced motions of polymer chains in a ferroelectric uniaxially drawn film of poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] (molar ratio, 1:0.18) consisting mainly of the polar crystalline β phase. We analyzed the observed spectra under the C2v symmetry of an infinite poly(vinylidene fluoride) (PVDF) chain. The changes in intensity of the a1 bands (2979, 1432, 1280, and 842 cm-1), b1 bands (1073 cm-1), and b2 bands (3017, 1168, and 880 cm-1) showed butterfly-shaped hysteresis loops characteristic of ferroelectricity when the electric field was varied from 1.4 to -1.4 MV/cm. The changes in intensity of the a1 and b2 bands with transition dipole moments perpendicular to the polymer chain were large, whereas those of the b1 bands with transition dipole moments parallel to the polymer chain were small. The changes in intensity of the a1 and b2 bands were mainly attributed to the inversion of the polymer chain around the polymer axis. On the other hand, the changes in intensity of the b1 band were attributed to the motion of a polar crystallite.

    AB - We have used infrared spectroscopy to study electric-field induced motions of polymer chains in a ferroelectric uniaxially drawn film of poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] (molar ratio, 1:0.18) consisting mainly of the polar crystalline β phase. We analyzed the observed spectra under the C2v symmetry of an infinite poly(vinylidene fluoride) (PVDF) chain. The changes in intensity of the a1 bands (2979, 1432, 1280, and 842 cm-1), b1 bands (1073 cm-1), and b2 bands (3017, 1168, and 880 cm-1) showed butterfly-shaped hysteresis loops characteristic of ferroelectricity when the electric field was varied from 1.4 to -1.4 MV/cm. The changes in intensity of the a1 and b2 bands with transition dipole moments perpendicular to the polymer chain were large, whereas those of the b1 bands with transition dipole moments parallel to the polymer chain were small. The changes in intensity of the a1 and b2 bands were mainly attributed to the inversion of the polymer chain around the polymer axis. On the other hand, the changes in intensity of the b1 band were attributed to the motion of a polar crystallite.

    KW - Ferroelectricity

    KW - Infrared spectroscopy

    KW - Poly(vinylidene fluoride-co-hexafluoropropylene)

    KW - Polymers

    UR - http://www.scopus.com/inward/record.url?scp=84925070973&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84925070973&partnerID=8YFLogxK

    U2 - 10.1016/j.vibspec.2015.03.001

    DO - 10.1016/j.vibspec.2015.03.001

    M3 - Article

    AN - SCOPUS:84925070973

    VL - 78

    SP - 12

    EP - 16

    JO - Vibrational Spectroscopy

    JF - Vibrational Spectroscopy

    SN - 0924-2031

    ER -