Temperature dependence of complex permittivity in biodegradable polybutylene succinate

Hiroto Ishikawa, Yoshimichi Ohki

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    Polybutylene succinate, a kind of biodegradable polymer, shows thermally stimulated polarization current (TSPC) peaks at around -35 °C and 50 °C. The lower-temperature TSPC peak can be well explained by dipolar polarization. As for the higher-temperature TSPC peak, the permittivity increases more significantly with a decrease in frequency, and the increment in permittivity estimated from the TSPC area agrees with the difference in permittivity at a sufficiently low frequency and at a sufficiently high frequency. It is assumed that a hetero charge layer is formed in front of the two electrodes and that such space charge is responsible for both the higher-temperature TSPC peak and the permittivity increase. The dielectric loss factor also increases with a decrease in frequency, and the increment is in good agreement with the assumption that the dielectric loss is ascribed to conduction loss due to high conductivity at high temperatures. All the results indicate that mobile ions are dominant carrier species in polybutylene succinate.

    Original languageEnglish
    JournalIEEJ Transactions on Fundamentals and Materials
    Volume128
    Issue number10
    DOIs
    Publication statusPublished - 2008

    Fingerprint

    Permittivity
    Polarization
    Dielectric losses
    Temperature
    Biodegradable polymers
    Electric space charge
    Electrodes
    Ions

    Keywords

    • Biodegradable polymer
    • Complex permittivity
    • Mobile ion
    • Polybutylene succinate
    • Thermally stimulated polarization current

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Temperature dependence of complex permittivity in biodegradable polybutylene succinate. / Ishikawa, Hiroto; Ohki, Yoshimichi.

    In: IEEJ Transactions on Fundamentals and Materials, Vol. 128, No. 10, 2008.

    Research output: Contribution to journalArticle

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    abstract = "Polybutylene succinate, a kind of biodegradable polymer, shows thermally stimulated polarization current (TSPC) peaks at around -35 °C and 50 °C. The lower-temperature TSPC peak can be well explained by dipolar polarization. As for the higher-temperature TSPC peak, the permittivity increases more significantly with a decrease in frequency, and the increment in permittivity estimated from the TSPC area agrees with the difference in permittivity at a sufficiently low frequency and at a sufficiently high frequency. It is assumed that a hetero charge layer is formed in front of the two electrodes and that such space charge is responsible for both the higher-temperature TSPC peak and the permittivity increase. The dielectric loss factor also increases with a decrease in frequency, and the increment is in good agreement with the assumption that the dielectric loss is ascribed to conduction loss due to high conductivity at high temperatures. All the results indicate that mobile ions are dominant carrier species in polybutylene succinate.",
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    AB - Polybutylene succinate, a kind of biodegradable polymer, shows thermally stimulated polarization current (TSPC) peaks at around -35 °C and 50 °C. The lower-temperature TSPC peak can be well explained by dipolar polarization. As for the higher-temperature TSPC peak, the permittivity increases more significantly with a decrease in frequency, and the increment in permittivity estimated from the TSPC area agrees with the difference in permittivity at a sufficiently low frequency and at a sufficiently high frequency. It is assumed that a hetero charge layer is formed in front of the two electrodes and that such space charge is responsible for both the higher-temperature TSPC peak and the permittivity increase. The dielectric loss factor also increases with a decrease in frequency, and the increment is in good agreement with the assumption that the dielectric loss is ascribed to conduction loss due to high conductivity at high temperatures. All the results indicate that mobile ions are dominant carrier species in polybutylene succinate.

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