Terahertz spectroscopic observation of cross-linked polyethylene aged simultaneously by heat and gamma-rays

Marina Komatsu*, Yoshimichi Ohki, Maya Mizuno, Kaori Fukunaga

*この研究の対応する著者

研究成果: Conference contribution

9 被引用数 (Scopus)

抄録

Chemically cross-linked polyethylene irradiated by γ-rays to certain designated doses from 100 to 800 kGy at 100°C in air was analyzed by X-ray diffraction, infrared spectroscopy and terahertz spectroscopy. It was found by infrared spectroscopy that the degree of oxidation increased when the sample was irradiated. By the terahertz spectroscopy, a peak appears at around 44 cm -1 (≃1.3 THz) when the sample was irradiated by γ-rays. By carrying out the Cole-Cole analysis on the complex permittivity spectra associated with the peak at 44 cm-1, the dipolar relaxation was found to exhibit a nearly single relaxation process. This suggests that the terahertz spectroscopy has a potential to detect the oxidative degradation of cross-linked polyethylene.

本文言語English
ホスト出版物のタイトルICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers
DOI
出版ステータスPublished - 2012 11 26
イベント2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012 - Bangalore, India
継続期間: 2012 7 242012 7 28

出版物シリーズ

名前Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

Other

Other2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012
国/地域India
CityBangalore
Period12/7/2412/7/28

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 材料化学

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