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：2025-07-26

- Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films
- Influence of β-Phase Content on the Stretching-induced α-β Phase Transition of Highly Oriented Poly(vinylidene fluoride) Ultrathin Films
- 高分子科学（英文） 2025年43卷第8期页码：1406-1414
- 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：
  
  This work was financially supported from the National Natural Science Foundation of China (Nos. 52203026 and 52027804).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-025-3358-y.
- DOI：10.1007/s10118-025-3358-y
  中图分类号：
- 收稿：2025-02-02，
  
  修回：2025-04-07，
  
  录用：2025-04-15，
  
  网络首发：2025-06-12，
  
  纸质出版：2025-08-01
- 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. 2025, 43, 1406–1414

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]. Chinese Journal of Polymer Science, 2025, 43(8): 1406-1414. DOI: 10.1007/s10118-025-3358-y.
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. 2025, 43, 1406–1414 DOI： 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]. Chinese Journal of Polymer Science, 2025, 43(8): 1406-1414. DOI: 10.1007/s10118-025-3358-y. DOI：

摘要

A full - phase transition has been achieved for highly oriented PVDF ultrathin films of 20.6% β phase

related to their parallel-aligned lamellar structure. However

a higher -phase content can suppress - phase transition due to the stress concentration effect of phase

leading to bent and tilted lamellae.

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 ultrathi

n films can be attributed to the parallel aligned lamellar structure. Moreover

a higher

-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.

关键词

Keywords

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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

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