書誌事項
- タイトル別名
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- Quantum yields for loss of carbonate ester bonds in polymeric nuclear track detectors under 222 nm UV radiation
- シガイセン ショウシャカ ニ オケル コウブンシケイ ヒセキ ケンシュツキチュウ カーボネート エステル ケツゴウ ソンシツ ノ リョウシ シュウリツ
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The effects of ultraviolet (UV) photons on bisphenol-A polycarbonate, PC, polyethylene telephtalate, PET, and poly (allyl diglycol carbonate), PADC, at a wavelength of 222 nm has been examined by means of FT-IR spectrometry, which have been applied for polymeric nuclear track detectors. The progress of photo-Fries reaction has been found in PC, as well as de-carbonyl reaction forming CO or CO2 gases. The quantum yield for the de-carbonyl reaction is about 2×10-3, which is almost equivalent to that of simple shift of carbonyl due to hydroxyl group on the neighboring polymer chains. Norrish I and II type reactions have been found in PET. The de-carbonyl reaction is hardly observed in the early stage of the UV irradiations. The de-carbonyl reaction in PADC is hardly enhanced in the early stage of the exposure. On the other hand, breaking of ether bonds in PADC progressed effectively under the UV ray. Only above a fluence of 3.9×1019 photons/cm2, the de-carbonyl reaction will start in PADC.
収録刊行物
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- 神戸大学大学院海事科学研究科紀要
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神戸大学大学院海事科学研究科紀要 07<商船・理工論篇> 87-98, 2010-07
神戸大学大学院海事科学研究科
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詳細情報 詳細情報について
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- CRID
- 1390853649857588480
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- NII論文ID
- 110007649054
- 120002425886
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- NII書誌ID
- AA12581493
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- ISSN
- 21873232
- 21852804
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- HANDLE
- 20.500.14094/81002406
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- NDL書誌ID
- 10813699
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用可