Observation of oxidized region in -ray irradiated polyethylene with KOH treatment and SEM-EDS

Shimada, Akihiko; Sugimoto, Masaki; Yoshikawa, Masahito

JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 30, 2015/03

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2014-050.pdf#page=62

In case of the accelerated ageing test on polymer cable insulation used for the nuclear power facility, it is very important to recognize whether oxygen penetrates in the polymer wholly or not. To confirm this, there are the method by which polymer is soaked in the KOH solution at 70C for 5 minutes, dried and observed by a SEM-EDS, only for ethylene propylene rubber, one of the polymers. This study is to apply that method for polyethylene. Polyethylene sheet of 2 mm thickness was irradiated by ray at a dose rate of 2 kGy/h for 400 h. A piece of irradiated polyethylene was picked up and the piece was soaked in the KOH solution for 24 h. After that, the piece was observed by a SEM-EDS. At the region within 70 micro meters from the surface, potassium is observed. It means that oxidation is occurred in this region. From now on, optimum soaking time will be examined.

ESR study on chemical crosslinking reaction mechanisms of polyethylene using a chemical agent, 4; Effect of sulfur- and phosphorous-type antioxidants

Yamazaki, Takanori*; Seguchi, Tadao

Journal of Polymer Science, Part A; Polymer Chemistry, 38(17), p.3092 - 3099, 2000/09

no abstracts in English

Polymerization of phosphor-containing oligomer induced by electron-beam irradiation

*; *; ; Hatada, Motoyoshi

Journal of Applied Polymer Science, 55, p.1643 - 1649, 1995/00

https://doi.org/10.1002/app.1995.070551204

no abstracts in English

Preparation of flame-retardant polyethylene foam of open-cell type by radiation grafting of vinyl phosphonate oligomer

; *; *; *; Hatada, Motoyoshi

Journal of Applied Polymer Science, 51, p.841 - 853, 1994/00

https://doi.org/10.1002/app.1994.070510507

no abstracts in English

Thin film alanine-polyethylene dosimeter

Kojima, Takuji; H.L.A.Ranjith*; Haruyama, Yasuyuki; Kashiwazaki, Shigeru*; Tanaka, Ryuichi

Applied Radiation and Isotopes, 44(1-2), p.41 - 45, 1993/00

https://doi.org/10.1016/0969-8043(93)90193-E

no abstracts in English

ESR study on crosslinking reaction of PE induced by dicumyl-per-oxide

Yamazaki, T.*; Seguchi, Tadao

DEI-92-118, p.103 - 110, 1992/00

no abstracts in English

Effect of molecular orientation on the radiolysis of polyethylene in the presence of oxygen

*; Nishii, Masanobu; Seguchi, Tadao; *; *

Radiation Physics and Chemistry, 37(2), p.213 - 216, 1991/00

https://doi.org/10.1016/1359-0197(91)90130-T

no abstracts in English

Preparation of hydrophilic polyethylenefoam of open cell type by radiation grafting of acrylic acid

; Hatada, Motoyoshi; *; *; *

Journal of Applied Polymer Science, 37, p.2153 - 2164, 1989/00

https://doi.org/10.1002/app.1989.070370807

no abstracts in English

Proton irradiation effects on organic polymers

Seguchi, Tadao; Sasuga, Tsuneo; Kawakami, Waichiro; Hagiwara, Miyuki; Kono, Isamu*; Kamitsubo, Hromichi*

Proceedings of 11th International Conference on Cyclotrons and Their Applications, p.669 - 672, 1987/00

Organic polymer films(100 m thickness) of polyethylene, polypropylene, polyethyleneterephtalate, and polyethersulfone were irradiated by protons of 8MeV using a cyclotorn, and their radiation effects were investigated by the changes of mechanical properties.

Distribution of grafted poly(acrylic acid)in polyethylene film

J.Appl.Polym.Sci., 32, p.4405 - 4422, 1986/00

https://doi.org/10.1002/app.1986.070320410

no abstracts in English