Terahertz spectral change associated with glass transition of poly-ε-caprolactone

Marina Komatsu, Maya Mizuno, Shingo Saito, Kaori Fukunaga, Yoshimichi Ohki

    研究成果: Article査読

    17 被引用数 (Scopus)

    抄録

    We measured absorption spectra of unidirectionally stretched poly-ε-caprolactone (PCL) film in a range from 0.3 to 3.6 THz at temperatures from 10 to 300 K. Several absorption peaks were observed, when the electric field of THz waves was set in directions parallel and perpendicular to the stretching direction. The absorption bandwidths became significantly broad at around 200 K and above at least in two specific peaks. This temperature is close to the glass transition temperature of PCL. Further, it is shown by quantum chemical calculations that all the peaks obtained experimentally originate in skeletal vibrations of PCL. Therefore, it has become clear that a specific feature appears in the THz absorption spectrum of PCL associated with its glass transition.

    本文言語English
    論文番号133102
    ジャーナルJournal of Applied Physics
    117
    13
    DOI
    出版ステータスPublished - 2015 4 7

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    フィンガープリント 「Terahertz spectral change associated with glass transition of poly-ε-caprolactone」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル