中国塑料 ›› 2014, Vol. 28 ›› Issue (05): 16-20 .DOI: 10.19491/j.issn.1001-9278.2014.05.003

• 综述 • 上一篇    下一篇

聚合物串晶结构制备研究进展

徐运祺1,王万卷容腾2,刘志健何国山潘永红   

  1. 1. 广州质量监督检测研究院2. 广州市质量监督检测研究院
  • 收稿日期:2014-01-15 修回日期:2014-02-15 出版日期:2014-05-26 发布日期:2014-05-26

Advance on Preparation of Polymer Shish-kebab Structure

  • Received:2014-01-15 Revised:2014-02-15 Online:2014-05-26 Published:2014-05-26

摘要: 综述了聚合物串晶结构的制备方法,其中主要有熔融挤出流延法、熔融纺丝法和溶液结晶法等。讨论了聚合物串晶结构形成和生长机理的研究进展。研究表明,各向同性熔体的分子链会发生折叠而形成球晶,而取向熔体的分子链会被拉伸伸直而形成串晶。串晶结构(shish-kebab)形成过程中,由伸直链晶体组成的部分(shish)和由折叠链晶体组成的部分(kebab)是同时形成的。最后对串晶结构的应用前景提出了展望。

关键词: 串晶, 制备, 机理, 研究进展

Abstract: Preparation methods of polymer shish-kebab structure have been reviewed. Melt extruding casting, melt spinning, and solution crystallization method have been introduced. Research progress in formation mechanism and crystallization model for shish-kebab has been discussed. It was observed that spherulites and shish-kebabs will be formed from the isotropic and oriented melt via fold and bundle nucleus, respectively. In the process of shish-kebab formation, shish crystals and kebab crystals will form simultaneously. Shish crystals consists of extended chain, and kebab crystals consist of folded chain. Finally, prospect for application of shish-kebab structure has been indicated.

Key words: shish-kebab, preparation, mechanism, research progress