Mechanistic Insights into the Shear Effects on Isotactic Polypropylene Crystallization Containing <italic style="font-style: italic">β</italic>-Nucleating Agent

Bao-jing Luo; Hong-fei Li; Wen-yang Zhang; Cheng-bo Zhou; Jing-qing Li; Cong-hua Lu; Xue-hao He; Shi-chun Jiang

doi:10.1007/s10118-017-1912-y

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Mechanistic Insights into the Shear Effects on Isotactic Polypropylene Crystallization Containing β-Nucleating Agent

Papers | Updated：2021-02-18

- Mechanistic Insights into the Shear Effects on Isotactic Polypropylene Crystallization Containing β-Nucleating Agent
- Chinese Journal of Polymer Science Vol. 35, Issue 5, Pages: 672-680(2017)
- Affiliations：
  
  a.School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
  b.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  c.Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
- Author bio：
  
  Shi-chun Jiang (蒋世春), E-mail:scjiang@tju.edu.cn
- Funds：
- DOI：10.1007/s10118-017-1912-y
  CLC：
- Received：19 October 2016，
  
  Revised：2016-12-1，
  
  Accepted：06 December 2016，
  
  Published：2017-05
- Accepted：
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Bao-jing Luo, Hong-fei Li, Wen-yang Zhang, et al. Mechanistic Insights into the Shear Effects on Isotactic Polypropylene Crystallization Containing β-Nucleating Agent[J]. Chinese Journal of Polymer Science, 2017, 35(5): 672-680. DOI: 10.1007/s10118-017-1912-y.
DOI：

Bao-jing Luo, Hong-fei Li, Wen-yang Zhang, et al. Mechanistic Insights into the Shear Effects on Isotactic Polypropylene Crystallization Containing β-Nucleating Agent[J]. Chinese Journal of Polymer Science, 2017, 35(5): 672-680. DOI: 10.1007/s10118-017-1912-y. DOI：

摘要

Abstract

The crystalline structures and crystallization behaviors of

PP containing

nucleation agent TMB-5 (

PP/TMB-5) were investigated by synchrotron radiation wide angel X-ray diffraction (SR-WAXD)

differential scanning calorimeter (DSC) and polarized light microscope (PLM). It was found that

-crystallization lagged behind

-crystallization at normal temperatures

but the discrepancy reduced with increasing temperature. TMB-5 could not induce

PP when the nucleation agent is wrapped up with

-crystal that crystallized at high temperatures. The polymorphic composition of

PP/TMB-5 was susceptible to the introductory moment of shear. New crystallization process of

-nucleated

PP was proposed to understand the experimental phenomena which could not be explained by those reported in the literature. It was supposed that polymer crystallization initiated from mesophase

and the formations of

PP crystals involved the organization of helical conformation ordering within mesophase. It was proposed that the

PP melt contained mesophases with stereocomplex-type ordering of right-handed and left-handed helical chains which could be disturbed by shear or TMB-5

leading to different polymorphic structures.

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Mechanistic Insights into the Shear Effects on Isotactic Polypropylene Crystallization Containing β-Nucleating Agent

DOI：10.1007/s10118-017-1912-y

摘要

Abstract

关键词

Keywords

references