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j.polymer.2012.04.033.pdf | 2.7 MB | Adobe PDF | 見る/開く |
タイトル: | Heating rate effects on the crystallization behavior of isotactic polypropylene from mesophase – A de-polarized light transmission study |
著者: | Asakawa, Harutoshi Nishida, Koji https://orcid.org/0000-0003-0159-9791 (unconfirmed) Yamamoto, Junpei Inoue, Rintaro Kanaya, Toshiji |
著者名の別形: | 西田, 幸次 |
キーワード: | Isotactic polypropylene (iPP) Mesophase De-polarized light transmission (DPLT) |
発行日: | Jun-2012 |
出版者: | Elsevier Ltd. |
誌名: | Polymer |
巻: | 53 |
号: | 13 |
開始ページ: | 2777 |
終了ページ: | 2782 |
抄録: | It was ever reported in a communication of this journal that the large crystal grains having “bamboo leaf-like (BL)” morphology were produced by a rapid heating of isotactic polypropylene (iPP) from the mesophase. In order to optimize the condition to generate the BL crystals, heating rate effects on the crystallization behavior from the mesophase of iPP have been studied by utilizing a de-polarized light transmission (DPLT) method. The DPLT sensitively detected not only the cold crystallization from the mesophase around 100–120 °C but also the crystal grain growth in a narrow temperature region just below the melting temperature. With increasing the heating rate, both the temperature regions of the cold crystallization and the crystal grain growth shifted toward the higher temperatures. When the heating rate is slow (<20 °C/min), the crystal grain growth was not conspicuous. With increasing the heating rate, the rate of the crystal grain growth increased and showed a maximum when the heating rate is approximately 60–80 °C/min. However, excessively fast heating (>100 °C/min) also suppressed the crystal grain growth. |
著作権等: | © 2012 Elsevier Ltd. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/157233 |
DOI(出版社版): | 10.1016/j.polymer.2012.04.033 |
出現コレクション: | 学術雑誌掲載論文等 |
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