論文

査読有り
2013年3月

Giant single crystal of isotactic polypropylene showing near-equilibrium melting temperature

POLYMER JOURNAL
  • Harutoshi Asakawa
  • ,
  • Koji Nishida
  • ,
  • Toshiji Kanaya
  • ,
  • Masatoshi Tosaka

45
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
DOI
https://doi.org/10.1038/pj.2012.136
CiNii Articles
http://ci.nii.ac.jp/naid/40019593142
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000317090400008&DestApp=WOS_CPL
ID情報
  • DOI : 10.1038/pj.2012.136
  • ISSN : 0032-3896
  • eISSN : 1349-0540
  • CiNii Articles ID : 40019593142
  • Web of Science ID : WOS:000317090400008

エクスポート
BibTeX RIS