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

doi:10.1109/iseim.2005.193578

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

^*Corresponding author for this work

Kagami Memorial Research Institute for Materials Science and Technology

Research output: Contribution to conference › Paper › peer-review

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 language	English
Pages	421-424
Number of pages	4
DOIs	https://doi.org/10.1109/iseim.2005.193578
Publication status	Published - 2005
Event	2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu, Japan Duration: 2005 Jun 5 → 2005 Jun 9

Conference

Conference	2005 International Symposium on Electrical Insulating Materials, ISEIM 2005
Country/Territory	Japan
City	Kitakyushu
Period	05/6/5 → 05/6/9

ASJC Scopus subject areas

Engineering(all)
Materials Science(all)

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10.1109/iseim.2005.193578

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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. 421-424. Paper presented at 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, Japan. https://doi.org/10.1109/iseim.2005.193578

Effects of ultraviolet photon irradiation on the space charge accumulation properties of several biodegradable polymers. / Yamaguchi, Yuya; Hirai, Naoshi; Tanaka, Toshikatsu et al.
2005. 421-424 Paper presented at 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, Japan.

Research output: Contribution to conference › Paper › peer-review

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', Paper presented at 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, Japan, 05/6/5 - 05/6/9 pp. 421-424. https://doi.org/10.1109/iseim.2005.193578

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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.",

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AU - Yamaguchi, Yuya

AU - Hirai, Naoshi

AU - Tanaka, Toshikatsu

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AU - Tajitsu, Yoshiro

AU - Kohtoh, Masanori

AU - Okabe, Shigemitsu

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AB - 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.

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

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