Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers

Yuya Yamaguchi, Naoshi Hirai, Toshikatsu Tanaka, Yoshimichi Ohki, Yoshiro Tajitsu, Masanori Kohtoh, Shigemitsu Okabe

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

4 Citations (Scopus)

Abstract

Five kinds of biodegradable polymers were irradiated for 30 minutes by ultraviolet photons from a KrCl excimer lamp. Space charge distribution profiles observed by the pulsed electroacoustic method were compared between the non-irradiated and irradiated samples. The absorption spectra as a function of wavelength obtained for the samples indicate intensive appearance of conjugated double bonds in the vicinity of the irradiated surface in all the biodegradable polymers. Molecular weight composition profiles observed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry show that the samples were decomposed by the irradiation. This decomposition seems to be responsible for the higher conductivity of the irradiated samples, which in turn results in the change of space charge distribution profiles.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Electrical Insulating Materials
Pages421-424
Number of pages4
Volume2
Publication statusPublished - 2005
Event2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu
Duration: 2005 Jun 52005 Jun 9

Other

Other2005 International Symposium on Electrical Insulating Materials, ISEIM 2005
CityKitakyushu
Period05/6/505/6/9

Fingerprint

Biodegradable polymers
Charge distribution
Electric space charge
Photons
Irradiation
Electric lamps
Ionization
Mass spectrometry
Absorption spectra
Desorption
Molecular weight
Decomposition
Wavelength
Lasers
Chemical analysis

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

Cite this

Yamaguchi, Y., Hirai, N., Tanaka, T., Ohki, Y., Tajitsu, Y., Kohtoh, M., & Okabe, S. (2005). Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers. In Proceedings of the International Symposium on Electrical Insulating Materials (Vol. 2, pp. 421-424)

Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers. / Yamaguchi, Yuya; Hirai, Naoshi; Tanaka, Toshikatsu; Ohki, Yoshimichi; Tajitsu, Yoshiro; Kohtoh, Masanori; Okabe, Shigemitsu.

Proceedings of the International Symposium on Electrical Insulating Materials. Vol. 2 2005. p. 421-424.

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

Yamaguchi, Y, Hirai, N, Tanaka, T, Ohki, Y, Tajitsu, Y, Kohtoh, M & Okabe, S 2005, Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers. in Proceedings of the International Symposium on Electrical Insulating Materials. vol. 2, pp. 421-424, 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, 05/6/5.
Yamaguchi Y, Hirai N, Tanaka T, Ohki Y, Tajitsu Y, Kohtoh M et al. Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers. In Proceedings of the International Symposium on Electrical Insulating Materials. Vol. 2. 2005. p. 421-424
Yamaguchi, Yuya ; Hirai, Naoshi ; Tanaka, Toshikatsu ; Ohki, Yoshimichi ; Tajitsu, Yoshiro ; Kohtoh, Masanori ; Okabe, Shigemitsu. / Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers. Proceedings of the International Symposium on Electrical Insulating Materials. Vol. 2 2005. pp. 421-424
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