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Long-term Oxidative Degradation of Electron Beam Irradiated High Density Polyethylene Studied by Positron Annihilation Technique
https://repo.qst.go.jp/records/72873
https://repo.qst.go.jp/records/72873574d60ee-e351-466e-9be1-4bd643dbbca4
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-07-23 | |||||
| タイトル | ||||||
| タイトル | Long-term Oxidative Degradation of Electron Beam Irradiated High Density Polyethylene Studied by Positron Annihilation Technique | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
T.Oka
× T.Oka× N.Nagasawa× Y.Kino× T.Sekine× 長澤 尚胤 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Structural change and degradation of electron-beam irradiated high density polyethylene was investigated by a conventional positron annihilation lifetime spectroscopy (PALS) using 22Na positron source, gel fraction measurement, and micro-FT-IR spectroscopy immediately after the irradiation and after 3 years storage in air. The pick-off annihilation intensity of ortho-positronium (o-Ps) became small by the irradiation and after the storage maybe due to the trapping of positron by radicals/carbonyl groups. On the other hand, o-Ps lifetime did not change by the irradiation and the storage. It suggests that size of nanometer-sized free-volume is not affected by the structural change such as oxidation and cross-linking. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The 13th meeting of the “Ionizing Radiation and Polymers” symposium (IRaP2018) | |||||
| 発表年月日 | ||||||
| 日付 | 2018-08-27 | |||||
| 日付タイプ | Issued | |||||
