Terahertz and far-infrared spectroscopic estimation of vinyl acetate content in ethylene-vinyl acetate copolymer

Tomoyuki Izutsu, Daisuke Odaka, Marina Komatsu, Yoshimichi Ohki, Maya Mizuno, Yoshiaki Nakamura, Naofumi Chiwata

    研究成果: Conference contribution

    2 被引用数 (Scopus)

    抄録

    For the purpose of estimating the content of vinyl acetate (VA) in ethylene-vinyl acetate copolymer (EVA), optical absorption spectra were measured in a frequency range from 0.5 to 21.0 THz for sheets of EVA containing different contents of VA from 12 to 60 % by weight and a sheet of low-density polyethylene containing no VA. As a result, it has become clear that EVA exhibits relatively sharp absorption at 2.5, 6.7, and 10.5 THz and rather broad absorption at 11 to 17 THz and 17 to 20 THz. All these absorption peaks and bands are in proportion to the content of VA, up to certain frequency-dependent contents. Using these proportionalities, the content of VA in EVA can be estimated quantitatively. Especially, the absorption at 2.5 THz shows a good accuracy similar to the method recommended by an international standard.

    本文言語English
    ホスト出版物のタイトルAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ39-42
    ページ数4
    2015-December
    ISBN(印刷版)9781467374972
    DOI
    出版ステータスPublished - 2015 12 9
    イベントIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015 - Ann Arbor, United States
    継続期間: 2015 10 182015 10 21

    Other

    OtherIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2015
    CountryUnited States
    CityAnn Arbor
    Period15/10/1815/10/21

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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