Effect of crystallinity on electrical conduction characteristics of poly(L-lactic acid)

Shingo Omori, Makoto Matsushita, Fukutaro Kato, Yoshimichi Ohki

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    The crystallinity of poly(L-lactic acid) was changed by thermal annealing and its effects on electrical conduction characteristics were studied. Low-crystallinity samples have a higher conductivity and a higher remaining charge quantity than high-crystallinity samples. The sample shows two thermally stimulated current (TSC) peaks at around Tg and about 20 °C higher than Tg when its crystallinity is low, while it shows only the former TSC peak when its crystallinity is high. The TSC peak at around T g is attributable to the micro-Brownian motion that enables the orientation of dipoles in a direction perpendicular to the polymer main chain, whereas the high-temperature peak is attributable to the orientation and magnitude change of the end-to-end vector in the polymer main chain.

    Original languageEnglish
    Pages (from-to)3501-3503
    Number of pages3
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume46
    Issue number6 A
    DOIs
    Publication statusPublished - 2007 Jun 6

    Fingerprint

    lactic acid
    Lactic acid
    crystallinity
    conduction
    Brownian movement
    Polymers
    Annealing
    polymers
    Temperature
    dipoles
    conductivity
    annealing
    Hot Temperature

    Keywords

    • Biodegradable polymer
    • Crystallinity
    • Electrical conduction
    • Glass transition

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Effect of crystallinity on electrical conduction characteristics of poly(L-lactic acid). / Omori, Shingo; Matsushita, Makoto; Kato, Fukutaro; Ohki, Yoshimichi.

    In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 46, No. 6 A, 06.06.2007, p. 3501-3503.

    Research output: Contribution to journalArticle

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