Rotational Dynamics of a Probe in Rubbery Polymers Characterized by Time-Resolved Fluorescence Anisotropy Measurement

Hung K. Nguyen, Asuka Konomi, Shin Sugimoto, Manabu Inutsuka, Daisuke Kawaguchi, Keiji Tanaka

    研究成果: Contribution to journalArticle査読

    2 被引用数 (Scopus)

    抄録

    The rotational relaxation time (τrot) of a fluorescent molecule, coumarin 153 (C153), dispersed in different rubbery polymers is characterized by time-resolved fluorescence anisotropy measurement, and an attempt is made to quantitatively combine it with the segmental relaxation time (τseg) of the corresponding matrix polymer obtained by dielectric relaxation spectroscopy. This study here demonstrates that τseg extrapolated to higher temperatures using the Vogel–Fulcher–Tammann law can be superimposed on τrot, resulting in a single curve. This behavior is common for polymers with different glass transition temperatures such as polyisoprene and acrylonitrile/butadiene copolymer, implying that the rotational dynamics of C153 is a useful tool for the characterization of polymer dynamics.

    本文言語英語
    論文番号1700329
    ジャーナルMacromolecular Chemistry and Physics
    219
    3
    DOI
    出版ステータス出版済み - 2 1 2018

    All Science Journal Classification (ASJC) codes

    • 凝縮系物理学
    • 物理化学および理論化学
    • 有機化学
    • ポリマーおよびプラスチック
    • 材料化学

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