The Effect of <italic style="font-style: italic">In situ</italic> Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends

Wen-Kang Wei; Jing-Jing Zhao; Chen-Guang Liu; Dong Wang; Ai-Hua He

doi:10.1007/s10118-024-3240-3

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The Effect of In situ Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends

RESEARCH ARTICLE | Updated：2024-12-03

- The Effect of In situ Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends
- The Effect of In situ Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends
- 高分子科学（英文版） 2024年42卷第12期页码：2011-2020
- Affiliations：
  
  a.Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  b.State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  liuchenguang@qust.edu.cn (C.G.L.)
  dwang@mail.buct.edu.cn (D.W.)
  ahhe@qust.edu.cn, aihuahe@iccas.ac.cn (A.H.H.)
- Funds：
  
  This work was financially supported by the Major Scientific and Technological Innovation Project of Shandong Province (Nos. 2019JZZY010352 and 2021CXGC010901), Natural Science Foundation of Shandong Province (No. ZR2020ME079), and Taishan Scholar Program.;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-024-3240-3.
- DOI：10.1007/s10118-024-3240-3
  中图分类号：
- 纸质出版日期：2024-12-01，
  
  网络出版日期：2024-11-11，
  
  收稿日期：2024-07-01，
  
  修回日期：2024-08-14，
  
  录用日期：2024-09-23
- Accepted：
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Wei, W. K.; Zhao, J. J.; Liu, C. G.; Wang, D.; He, A. H. The effect of in situ melt pre-shear induced oriented precursors on the crystallization of poly(1-butene)/polypropylene blends. Chinese J. Polym. Sci. 2024, 42, 2011–2020

WEN-KANG WEI, JING-JING ZHAO, CHEN-GUANG LIU, et al. The Effect of In situ Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends. [J]. Chinese journal of polymer science, 2024, 42(12): 2011-2020.
Wei, W. K.; Zhao, J. J.; Liu, C. G.; Wang, D.; He, A. H. The effect of in situ melt pre-shear induced oriented precursors on the crystallization of poly(1-butene)/polypropylene blends. Chinese J. Polym. Sci. 2024, 42, 2011–2020 DOI： 10.1007/s10118-024-3240-3.

WEN-KANG WEI, JING-JING ZHAO, CHEN-GUANG LIU, et al. The Effect of In situ Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends. [J]. Chinese journal of polymer science, 2024, 42(12): 2011-2020. DOI： 10.1007/s10118-024-3240-3.

摘要

In situ

melt pre-shear induced oriented precursors of PP directly lead to the formation of different kind of or

iented crystal structure of PP

which has a significant effect on the subsequent crystallization (including crystallization behavior

crystal properties

crystal structure and morphology) of PB in PB/PP blends.

Abstract

Melt pre-shear induced crystallization of polymer blends holds great significance in industrial processing and product application. In this work

two typical PB/PP blends (50/50

90/10)

possessing commercial value and academic hotspot

were employed to investigate the effect of melt pre-shear on the crystallization of isotactic poly(1-butene) (PB) and polypropylene (PP) by applying shearing slightly above the melting temperature of PP with subsequent non-isothermal crystallization to simulate actual processing conditions. It was discovered that in PB/PP (90/10) blend

in situ

melt pre-shear generated oriented PP precursors induced the formation of PP-FIC (Flow-induced crystallization) which acted as row crystal nucleus significantly promoting PB crystallization into spherulite with higher melting temperatures (

)

crystallinity (

)

and thicker lamellar thickness (

). While in PB/PP (50/50) blend

the melt pre-shear generated PP-shish precursors induced the formation of PP shish-kebab that exerted a confining effect on the crystal growth of PB

resulting in truncated spherulite formation with higher

and thicker

but lower

. This research provides insight into the mechanism underlying oriented crystal structure formation

crystal properties

and phase morphology of PB/PP blends under melt pre-shear fields

which have significant theoretical and practical implications for their industrial processing and preparation of high-performance products.

关键词

Keywords

Melt pre-shearPB/PP blendsPrecursorsCrystallization

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The Effect of In situ Melt Pre-shear Induced Oriented Precursors on the Crystallization of Poly(1-butene)/Polypropylene Blends

DOI：10.1007/s10118-024-3240-3

摘要

Abstract

关键词

Keywords

references