論文

査読有り
2018年1月23日

Shish-Kebab Crystallites Initiated by Shear Fracture in Bulk Polymers

Macromolecules
  • Yijing Nie
  • ,
  • Yunfeng Zhao
  • ,
  • Go Matsuba
  • ,
  • Wenbing Hu

51
2
開始ページ
480
終了ページ
487
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.macromol.7b02357
出版者・発行元
American Chemical Society

The study of shear-induced polymer crystallization has so far overlooked heterogeneous crystal nucleation of shish-kebab crystallites, which can be initiated by the stretched local polymer chains in the sporadic events of shear fracture upon sudden startup or cessation of polymer shear flow or in the memory of these events. We performed dynamic Monte Carlo simulations of a binary blend of short and long polymers and investigated the formation process of shish-kebab crystallites in a driven field with Poiseuille-flow-like gradient forces presumably generated around the shear layer of melt fracture. The results demonstrated the synergetic coil-extension and segregation behaviors of long-chain fractions upon precursor formation, which lead to a discontinuous crystalline structure along the shish. We found that the shear fracture hypothesis can reconcile several controversial experimental arguments on the precursor formation of shish-kebab crystallites in shear-induced polymer crystallization.

リンク情報
DOI
https://doi.org/10.1021/acs.macromol.7b02357
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000423418100021&DestApp=WOS_CPL
URL
http://orcid.org/0000-0002-6863-5796
ID情報
  • DOI : 10.1021/acs.macromol.7b02357
  • ISSN : 1520-5835
  • ISSN : 0024-9297
  • ORCIDのPut Code : 49576478
  • SCOPUS ID : 85041029872
  • Web of Science ID : WOS:000423418100021

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