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Morphology of drawn syndiotactic polypropylene films
http://hdl.handle.net/10087/4813
http://hdl.handle.net/10087/481359f97371-5e52-4c72-b3f4-27cc56527e50
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
jms610133.pdf (6.0 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-08-27 | |||||
| タイトル | ||||||
| タイトル | Morphology of drawn syndiotactic polypropylene films | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | syndiotactic polypropylene | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | morphology | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | drawing | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | deformation | |||||
| 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 | |||||
| 著者 |
Harasawa, J
× Harasawa, J× Uehara, H× Yamanobe, T× Komoto, T× Terano, M |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Morphological studies were conducted to investigate the drawability of melt-quenched (MQ) and slowly cooled (MSC) films of syndiotactic polypropylene (sPP) with a high syndiotactic pentad fraction. Transmission electron microscopy (TEM) using the ruthenium tetraoxide staining and ultrathin sectioning method revealed that amorphous chains as the matrix of MQ film played a role in drawability of the film by their alignment to machine direction (MD) and partial crystallizations into nanofibrils. On the other hand, the initial strain induced, rotations of clusters of long lamellar crystals as the major entity of MSC film accompanying breaks of long lamellae and formation of crazes and microvoids at the cluster boundary. Compared with a homogeneous thinning of MQ film by drawing, ca. 100 nm-thick layer slips along MD and parallel to the film surface took place in MSC film. This gave rise to the formation of V-shaped bent lamellar morphology and their further break into a smaller cluster of stacked lamellae which were aligned oblique by ca. 35 from MD. With elongation, some nanofibrils formed from chains generated by the partial breaks of lamellae are aligned perpendicular to the remained oblique lamellae and others parallel to MD in region where lamellar morphology almost disappeared. No chain slips in the nanofibrils can be related to a low elongation at break, i.e. a low ductility of sPP films. The lower elongation at break for MSC film than for MQ one can be interpreted by microvoids initially formed in the neck region and later moved to the fully drawn part, the microvoids initiating the break of the drawn film. | |||||
| 書誌情報 |
Journal of molecular structure 巻 610, 号 1-3, p. 133-142, 発行日 2002-06-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0022-2860 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00702852 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1016/S0022-2860(02)00047-9 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 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 | |||||
| 出版者 | ||||||
| 出版者 | Journal of molecular structure | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Journal Article | |||||
| 更新日 | ||||||
| 日付 | 2017-03-27 | |||||
| 日付タイプ | Created | |||||
