Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations

M. Hosobuchi, M. Komatsu, X. Xie, Y. Cheng, Y. Furukawa, Y. Ohki, M. Mizuno, K. Fukunaga

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

Electrical insulation properties of low density polyethylene (LDPE) are still unclear, especially when it is degraded. In this regard, ultraviolet (UV) photons were irradiated to LDPE sheets at room temperature and 85°C and their absorption spectra were measured at frequencies from 0.5 to 3.0 THz and from 18 to 105 THz. A very broad absorption band with its peak at around 1.6 THz appears by the UV irradiation. In accord with this appearance, the infrared absorption peak due to a carbonyl structure increases. Quantum chemical calculations were carried out using 3-dimensional models with and without carbonyl groups. As a result, the model with carbonyl groups was found to have optically active modes at about 1.7 THz. From these results, the increase in absorption at 1.6 THz is assumed to be induced by oxidation.

本文言語English
ホスト出版物のタイトル2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
ページ1046-1049
ページ数4
DOI
出版ステータスPublished - 2013 12月 1
イベント2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013 - Shenzhen, China
継続期間: 2013 10月 202013 10月 23

出版物シリーズ

名前Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
ISSN(印刷版)0084-9162

Conference

Conference2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
国/地域China
CityShenzhen
Period13/10/2013/10/23

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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