Influence of <italic style="font-style: italic">β</italic>-Phase Content on the Stretching-induced <italic style="font-style: italic">α</italic>-<italic style="font-style: italic">β</italic> Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films

Hai-Peng Li; Jia-Meng Liang; Rui-Hao Zheng; Han-Qi Zhu; Wen-Peng Zhao; Yun-Peng Li; Shao-Juan Wang; Hao Zhang; Shou-Ke Yan

doi:10.1007/s10118-025-3358-y

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Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films

RESEARCH ARTICLE | Updated：2025-06-20

- Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films
- Chinese Journal of Polymer Science Vol. 43, Pages: 1-9(2025)
- Affiliations：
  
  a.Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China
  b.School of Chemical Engineering, Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China
  c.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  wangshaojuan1982@163.com (S.J.W.)
  zhanghao@qust.edu.cn (H.Z.)
- Funds：
- DOI：10.1007/s10118-025-3358-y
  CLC：
- Received：02 February 2025，
  
  Revised：07 April 2025，
  
  Accepted：15 April 2025，
  
  Published Online：12 June 2025，
  
  Published：2025-04
- Accepted：
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Li, H. P.; Liang, J. M.; Zheng, R. H.; Zhu, H. Q.; Zhao, W. P.; Li, Y. P.; Wang, S. J.; Zhang, H.; Yan, S. K. Influence of β-phase content on the stretching-induced α-β phase transition of highly oriented poly(vinylidene fluoride) ultrathin films. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-025-3358-y

Hai-Peng Li, Jia-Meng Liang, Rui-Hao Zheng, et al. Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films[J/OL]. Chinese journal of polymer science, 2025, 431-9.
Li, H. P.; Liang, J. M.; Zheng, R. H.; Zhu, H. Q.; Zhao, W. P.; Li, Y. P.; Wang, S. J.; Zhang, H.; Yan, S. K. Influence of β-phase content on the stretching-induced α-β phase transition of highly oriented poly(vinylidene fluoride) ultrathin films. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-025-3358-y DOI：

Hai-Peng Li, Jia-Meng Liang, Rui-Hao Zheng, et al. Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films[J/OL]. Chinese journal of polymer science, 2025, 431-9. DOI： 10.1007/s10118-025-3358-y.

摘要

Abstract

Highly oriented poly(vinylidene fluoride) (PVDF) ultrathin films with different

-phase contents were prepared using the melt-draw method. The effect of

-phase content on

phase transition of highly oriented PVDF ultrathin films induced by stretching was investigated using transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) spectroscopy. The results show that stretching can enhance the crystallinity and increase the average thickness of the lamellae. A full

phase transition can be achieved for PVDF ultrathin films of 20.6%

phase stretched to a

(stretching ratio) of 1.5

while few

phases still exist for ultrathin films of 35.0%

phase

together with bent and tilted lamellae. Compared to thicker PVDF films undergoing stretching-induced

phase transition

the higher

phase transition efficiency of the PVDF ultrathin films can be attributed to the parallel aligned lamellar structure. Moreover

a hig

her

-phase content can suppress

phase transition because of the stress concentration effect of

-phase. Ultimately

these results provide valuable insights into the stretching-induced

phase transition of PVDF ultrathin films.

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Keywords

references

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Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films

DOI：10.1007/s10118-025-3358-y

摘要

Abstract

关键词

Keywords

references