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

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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    Pages1046-1049
    Number of pages4
    DOIs
    Publication statusPublished - 2013
    Event2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013 - Shenzhen
    Duration: 2013 Oct 202013 Oct 23

    Other

    Other2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
    CityShenzhen
    Period13/10/2013/10/23

    Fingerprint

    Low density polyethylenes
    Polyethylene
    Polyethylenes
    Absorption spectra
    Infrared absorption
    Insulation
    Photons
    Irradiation
    Oxidation
    Temperature

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

    Cite this

    Hosobuchi, M., Komatsu, M., Xie, X., Cheng, Y., Furukawa, Y., Ohki, Y., ... Fukunaga, K. (2013). Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP (pp. 1046-1049). [6747437] https://doi.org/10.1109/CEIDP.2013.6747437

    Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations. / Hosobuchi, M.; Komatsu, M.; Xie, X.; Cheng, Y.; Furukawa, Yukio; Ohki, Yoshimichi; Mizuno, M.; Fukunaga, K.

    Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2013. p. 1046-1049 6747437.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Hosobuchi, M, Komatsu, M, Xie, X, Cheng, Y, Furukawa, Y, Ohki, Y, Mizuno, M & Fukunaga, K 2013, Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations. in Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP., 6747437, pp. 1046-1049, 2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013, Shenzhen, 13/10/20. https://doi.org/10.1109/CEIDP.2013.6747437
    Hosobuchi M, Komatsu M, Xie X, Cheng Y, Furukawa Y, Ohki Y et al. Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2013. p. 1046-1049. 6747437 https://doi.org/10.1109/CEIDP.2013.6747437
    Hosobuchi, M. ; Komatsu, M. ; Xie, X. ; Cheng, Y. ; Furukawa, Yukio ; Ohki, Yoshimichi ; Mizuno, M. ; Fukunaga, K. / Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2013. pp. 1046-1049
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    AU - Furukawa, Yukio

    AU - Ohki, Yoshimichi

    AU - Mizuno, M.

    AU - Fukunaga, K.

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