Crystallinity of poly(ethylene naphthalate) and its relation to terahertz absorption

Daisuke Odaka, Yoshimichi Ohki, Maya Mizuno

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    The crystallinity of poly(ethylene naphthalate) (PEN) was changed by thermal annealing and its effects on terahertz absorption spectra and X-ray diffraction patterns were examined. As a result, the intensity of a relatively sharp absorption peak at around 2.2 THz was found to be proportional to the crystallinity. As a plausible cause of this absorption, a lattice vibration, a torsional vibration, or their combination mode associated with (010) planes in crystal α of PEN is proposed. Therefore, the crystallinity of PEN can be estimated from the intensity of this absorption.

    Original languageEnglish
    Article number032402
    JournalJapanese Journal of Applied Physics
    Volume56
    Issue number3
    DOIs
    Publication statusPublished - 2017 Mar 1

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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