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

Marina Komatsu, Yoshimichi Ohki, Maya Mizuno, Kaori Fukunaga

研究成果: Conference contribution

8 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
CountryIndia
CityBangalore
Period12/7/2412/7/28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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