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
- Chinese Journal of Polymer Science Vol. 42, Issue 12, Pages: 2011-2020(2024)
- 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：
- DOI：10.1007/s10118-024-3240-3
  CLC：
- Published：01 December 2024，
  
  Published Online：11 November 2024，
  
  Received：01 July 2024，
  
  Revised：14 August 2024，
  
  Accepted：23 September 2024
- 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

references

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⁰

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