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

Marina Komatsu; Yoshimichi Ohki; Maya Mizuno; Kaori Fukunaga

doi:10.1109/ICPADM.2012.6318955

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

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

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	ICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers
DOIs	https://doi.org/10.1109/ICPADM.2012.6318955
Publication status	Published - 2012 Nov 26
Event	2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012 - Bangalore, India Duration: 2012 Jul 24 → 2012 Jul 28

Publication series

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

Other

Other	2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012
Country/Territory	India
City	Bangalore
Period	12/7/24 → 12/7/28

Keywords

Terahertz light
cable insulation
cross-linked polyethylene
radiation-induced degradation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1109/ICPADM.2012.6318955

Cite this

Komatsu, M., Ohki, Y., Mizuno, M., & Fukunaga, K. (2012). Terahertz spectroscopic observation of cross-linked polyethylene aged simultaneously by heat and gamma-rays. In ICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers Article 6318955 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). https://doi.org/10.1109/ICPADM.2012.6318955

Terahertz spectroscopic observation of cross-linked polyethylene aged simultaneously by heat and gamma-rays. / Komatsu, Marina; Ohki, Yoshimichi; Mizuno, Maya et al.
ICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers. 2012. 6318955 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Komatsu, M, Ohki, Y, Mizuno, M & Fukunaga, K 2012, Terahertz spectroscopic observation of cross-linked polyethylene aged simultaneously by heat and gamma-rays. in ICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers., 6318955, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials, 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012, Bangalore, India, 12/7/24. https://doi.org/10.1109/ICPADM.2012.6318955

Komatsu M, Ohki Y, Mizuno M, Fukunaga K. Terahertz spectroscopic observation of cross-linked polyethylene aged simultaneously by heat and gamma-rays. In ICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers. 2012. 6318955. (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). doi: 10.1109/ICPADM.2012.6318955

Komatsu, Marina ; Ohki, Yoshimichi ; Mizuno, Maya et al. / Terahertz spectroscopic observation of cross-linked polyethylene aged simultaneously by heat and gamma-rays. ICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers. 2012. (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials).

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abstract = "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.",

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author = "Marina Komatsu and Yoshimichi Ohki and Maya Mizuno and Kaori Fukunaga",

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N2 - 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.

AB - 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.

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

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