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Investigation of molecular mechanisms of melting and crystallization of isotactic polypropylene by in situ Raman spectroscopy
https://doi.org/10.24517/00050382
https://doi.org/10.24517/00050382ef2638fb-6307-40c0-a8fc-5a0b766076be
| 名前 / ファイル | ライセンス | アクション |
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SC-PR-HIEJIMA-Y-5867.pdf (1.2 MB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||
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| 公開日 | 2018-03-16 | |||||||||
| タイトル | ||||||||||
| タイトル | Investigation of molecular mechanisms of melting and crystallization of isotactic polypropylene by in situ Raman spectroscopy | |||||||||
| 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_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| ID登録 | ||||||||||
| ID登録 | 10.24517/00050382 | |||||||||
| ID登録タイプ | JaLC | |||||||||
| 著者 |
Hiejima, Yusuke
× Hiejima, Yusuke× Takeda, Kento× Nitta, Koh-hei |
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| 著者別表示 |
比江嶋, 祐介
× 比江嶋, 祐介
× 新田, 晃平
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| 提供者所属 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 金沢大学理工研究域自然システム学系 | |||||||||
| 書誌情報 |
Macromolecules 巻 50, 号 15, p. 5867-5876, 発行日 2017-08-01 |
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| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0024-9297 | |||||||||
| NCID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA0071963X | |||||||||
| DOI | ||||||||||
| 関連タイプ | isVersionOf | |||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1021/acs.macromol.7b00229 | |||||||||
| 出版者 | ||||||||||
| 出版者 | American Chemical Society | |||||||||
| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | In situ Raman spectroscopy has been used to reveal the molecular behavior of isotactic polypropylene during melting and crystallization. The 400 cm-1 band assigned to C-C-C bending shows a blue-shift during heating, suggesting an increase in conformational disorder, whereas the 1330 cm-1 band assigned to CH2 twisting shows a red-shift owing to an increase in the interchain distance. We suggest that interchain expansion proceeds even in the melt state, while the chain conformation becomes sufficiently disordered at the melting point. During the cooling process, the peak shifts at given temperatures are essentially the same as those during heating, except for the supercooled region where the peak shifts show obvious hystereses. By extrapolating the linear correlation between the peak shift of the 400 cm-1 band and the characteristic length along the chain axis, the critical stem size for crystallization is estimated to be ∼2.4 nm. © 2017 American Chemical Society. | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | Embargo Period 12 months | |||||||||
| 権利 | ||||||||||
| 権利情報 | Copyright © American Chemical Society | |||||||||
| 著者版フラグ | ||||||||||
| 出版タイプ | AM | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||
| 関連URI | ||||||||||
| 識別子タイプ | URI | |||||||||
| 関連識別子 | https://pubs.acs.org/doi/10.1021/acs.macromol.7b00229 | |||||||||
| 関連名称 | https://pubs.acs.org/doi/10.1021/acs.macromol.7b00229 | |||||||||
| 関連URI | ||||||||||
| 識別子タイプ | URI | |||||||||
| 関連識別子 | https://pubs.acs.org/journal/mamobx | |||||||||
| 関連名称 | https://pubs.acs.org/journal/mamobx | |||||||||
