Effect of gamma-ray irradiation on the TSC in polyethersulfone

E. J. Kim, G. Kato, T. Ohara, Y. Ohki, S. T. Li

研究成果: Article

9 引用 (Scopus)

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When polyethersulfone was irradiated by γ rays and then poled at 37°C, a new TSC (thermally stimulated current) peak appeared at ∼100°C. This new peak and other peaks near 40 and 150°C increase with an increase in dose of ∼0.6 kGy, and this is considered to be due to trapped charges and other ionic carriers becoming mobile when rearrangement of scissioned chains occurs. However, if the dose exceeds 0.6 kGy, the peak magnitude decreases. Furthermore, if the TSC was poled at 120°C, only the peak near 150°C appeared and this peak monotonically decreased with an increase in the irradiation dose. A similar decreasing tendency was also observed in the conduction current and in the residual voltage. These decreasing features are considered to be caused by the radiation-induced change that rearrangement of scissioned chains decreases free volume for ionic transport.

元の言語English
ページ(範囲)732-737
ページ数6
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
4
発行部数6
DOI
出版物ステータスPublished - 1997 12 1

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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