Crystal Morphology of Partially Melted Isotactic Polypropylene Under Quiescent and Flow Condition

被引：0
|
作者：
Shen J. [1 ,2 ]
Chen J. [2 ]
机构：
[1] School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang
[2] School of Materials Science and Engineering, Zhengzhou University, Zhengzhou
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2022年 / 38卷 / 10期
关键词：
Crystalline morphology; Isotactic polypropylene; Partially melting;
D O I：
10.16865/j.cnki.1000-7555.2022.0089
中图分类号：
学科分类号：
摘要：
Isolate isotactic polypropylene (iPP) spherulites were chosen as candidate. After partially melted between nominal melting point and equilibrium melting point,iPP melt' s crystalline morphologies were investigated by polarized optical microscopy (POM) under quiescent and flow conditions. The results of quiescent crystallization experiments show that the melt memory effect exists obviously and gradually decreases with the increase of melting temperature. The crystallization experiment results under flow show that the ordered structure (self seed), which survives in the partially melted iPP, can change its original spatial distribution along the predetermined route under flow, and significantly accelerate the crystallization process. This result can provide a new idea for regulating melt structure and crystalline morphology of crystalline polymer. © 2022, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：98 / 102
页数：4
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