2013年3月
Giant single crystal of isotactic polypropylene showing near-equilibrium melting temperature
POLYMER JOURNAL
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- ,
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- 巻
- 45
- 号
- 3
- 開始ページ
- 287
- 終了ページ
- 292
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/pj.2012.136
- 出版者・発行元
- NATURE PUBLISHING GROUP
Giant single crystals of isotactic polypropylene (iPP) were obtained using a specific kinetic pathway through the mesophase of iPP; the pre-quenched iPP mesophase was heated to 166 degrees C at a rate of 75 degrees C min(-1) and maintained at this temperature for 24 h. The obtained crystallites exhibited a very high melting temperature, T-m, of 183.7 degrees C, which is similar to 19 degrees C higher than the iPP's nominal T-m (similar to 165 degrees C); namely, the observed T-m is immediately close to the literature value of iPP's equilibrium melting temperature, T-m(0) (186.2 degrees C). The crystallites have bamboo leaf-like or needle-like morphology and are similar to 35 mu m in length and similar to 3.5 mu m in width. The thickness of the crystallites was estimated to be 88 nm according to the melting temperature. The number density of the crystallites in a unit volume was controlled by adjusting the heating rate. As the result, well-isolated single crystals of iPP with the above-mentioned morphologies were obtained. Polymer Journal (2013) 45, 287-292; doi:10.1038/pj.2012.136; published online 4 July 2012
- リンク情報
- ID情報
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- DOI : 10.1038/pj.2012.136
- ISSN : 0032-3896
- eISSN : 1349-0540
- CiNii Articles ID : 40019593142
- Web of Science ID : WOS:000317090400008