A new method for estimating the content of vinyl acetate in ethylene-vinyl acetate copolymer

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

研究成果: Article査読

14 被引用数 (Scopus)

抄録

A new method for estimating the content of vinyl acetate (VA) in ethylene-vinyl acetate copolymer (EVA) is proposed. It is a kind of optical absorption spectroscopy in a frequency range from 0.5 to 21.0 THz. Comparison of absorption spectra among sheets of EVA with differing contents of VA from 12 to 60% by weight and a sheet of low-density polyethylene containing no VA revealed that the EVA sheets exhibit 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 intensities are in proportion to the content of VA, up to certain contents, which enables us to estimate the content of VA in EVA quantitatively. Among them, the absorption at 2.5 THz measured by THz time-domain spectroscopy shows the best accuracy.

本文言語English
論文番号7534602
ページ(範囲)1260-1265
ページ数6
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
23
3
DOI
出版ステータスPublished - 2016 6月

ASJC Scopus subject areas

  • 電子工学および電気工学

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