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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/8821
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| タイトル: | Degradation behavior of polymer blend of isotactic polypropylenes with and without unsaturated chain end group |
| 著者: | Nakatani, Hisayuki
Kurniawan, Dodik
Taniike, Toshiaki
Terano, Minoru |
| キーワード: | polypropylene
unsaturated chain end groups
activation energy
radical initiator |
| 発行日: | 2008-07-07 |
| 出版者: | Institute of Physics and IOP Publishing Limited |
| 誌名: | Science and Technology of Advanced Materials |
| 巻: | 9 |
| 開始ページ: | 024401-1 |
| 終了ページ: | 024401-5 |
| DOI: | 10.1088/1468-6996/9/2/024401 |
| 抄録: | In this work, the relationship between the unsaturated chain end group content and the thermal oxidative degradation rate was systematically studied with binary polymer blends of isotactic polypropylene (iPP) with and without the unsaturated chain end group. The iPPs with and without the unsaturated chain end group were synthesized by a metallocene catalyst in the absence of hydrogen and by a Ziegler catalyst in the presence of one, respectively. The thermal oxidative degradation rate of the binary iPP blends was estimated from the molecular weight and the apparent activation energy (ΔE), which were obtained through size exclusion chromatography (SEC) and thermogravimetric analysis (TGA) measurements, respectively. These values exhibited a negative correlation against the mole content of the unsaturated chain end group. The thermal oxidative degradation rate apparently depends on the content of the unsaturated chain end group. This tendency suggests that the unsaturated chain end acts as a radical initiator of the iPP degradation reaction. |
| Rights: | Copyright (C) Institute of Physics and IOP Publishing Limited 2008. This is the author-created version of Institute of Physics and IOP Publishing Limited, Hisayuki Nakatani, Dodik Kurniawan, Toshiaki Taniike and Minoru Terano, Science and Technology of Advanced Materials, 9, 2008, 024401-1-024401-5. http://dx.doi.org/10.1088/1468-6996/9/2/024401 |
| URI: | http://hdl.handle.net/10119/8821 |
| 資料タイプ: | publisher |
| 出現コレクション: | c10-1. 雑誌掲載論文 (Journal Articles)
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このアイテムのファイル:
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記述 |
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| A13195.pdf | | 466Kb | Adobe PDF | 見る/開く |
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