Origins of photoluminescence bands induced by ultraviolet photons in polyethylene

Toshihide Ito, D. Kaneko, Y. Ohki

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

    2 Citations (Scopus)

    Abstract

    Photoluminescence (PL) spectra in low-density polyethylene (LDPE) and crosslinked polyethylene (XLPE) induced by irradiation of ultraviolet photons are examined. The samples were pre-irradiated by the ultraviolet photons under different atmospheres (air, O 2, and vacuum) in order to induce photochemical reactions. Two PL bands appear around 3.6 and 4.2 eV in LDPE. Their intensities decrease with the progress of the pre-irradiation regardless of the irradiation atmosphere. The two PLs are considered to be due to conjugated double bonds present in the antioxidant and impurities. A new PL band appears at 2.9 eV in LDPE if the sample was pre-irradiated in vacuum. This PL is considered to be due to photoinduced conjugated double bonds. In XLPE, a PL band different from the ones observed in LDPE appears at 3.1 eV. It is considered that the crosslinking byproducts are responsible for this band.

    Original languageEnglish
    Title of host publicationConference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
    Pages856-860
    Number of pages5
    Publication statusPublished - 2002
    Event2002 IEEE Conference on Electrical Insulation and Dielectric Phenomena - Cancun, Mexico
    Duration: 2002 Oct 202002 Oct 24

    Other

    Other2002 IEEE Conference on Electrical Insulation and Dielectric Phenomena
    CountryMexico
    CityCancun
    Period02/10/2002/10/24

    Fingerprint

    Polyethylenes
    Low density polyethylenes
    Photoluminescence
    Photons
    Irradiation
    Vacuum
    Photochemical reactions
    Antioxidants
    Crosslinking
    Byproducts
    Impurities
    Air

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Industrial and Manufacturing Engineering
    • Building and Construction

    Cite this

    Ito, T., Kaneko, D., & Ohki, Y. (2002). Origins of photoluminescence bands induced by ultraviolet photons in polyethylene. In Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report (pp. 856-860)

    Origins of photoluminescence bands induced by ultraviolet photons in polyethylene. / Ito, Toshihide; Kaneko, D.; Ohki, Y.

    Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report. 2002. p. 856-860.

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

    Ito, T, Kaneko, D & Ohki, Y 2002, Origins of photoluminescence bands induced by ultraviolet photons in polyethylene. in Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report. pp. 856-860, 2002 IEEE Conference on Electrical Insulation and Dielectric Phenomena, Cancun, Mexico, 02/10/20.
    Ito T, Kaneko D, Ohki Y. Origins of photoluminescence bands induced by ultraviolet photons in polyethylene. In Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report. 2002. p. 856-860
    Ito, Toshihide ; Kaneko, D. ; Ohki, Y. / Origins of photoluminescence bands induced by ultraviolet photons in polyethylene. Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report. 2002. pp. 856-860
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