Chinese Journal of Polymer Science

, Volume 37, Issue 12, pp 1283–1289 | Cite as

Orientation Efforts as Regulatory Factor of Structure Formation in Permeable Porous Poly(vinylidene fluoride) Films

  • G. K. ElyashevichEmail author
  • I. S. Kuryndin
  • I. Yu. Dmitriev
  • V. K. Lavrentyev
  • N. N. Saprykina
  • V. Bukošek


The manufacturing process of poly(vinylidene fluoride) microporous films containing through flow channels and permeable to liquids has been elaborated. The process is based on polymer melt extrusion with subsequent stages of annealing, uniaxial extensions (“cold” and “hot” drawing), and thermal stabilization. The effect of orientation parameters (melt draw ratio and extension degrees) on overall porosity, permeability, morphology, and content of polar piezoactive β-phase in crystalline structure of the films was investigated by filtration porosimetry, sorptometry, scanning electron microscopy, X-ray scattering, and mechanical properties measurements. It is shown that the through pores were formed by a percolation mechanism. It is observed that permeability and the β-phase content increased with the growth of extension degree at the pore formation stages but the portion of β-crystallites decreased with increasing melt draw ratio at extrusion, which permitted to regulate the combination of through permeability and piezoactivity values by variation of the preparation process parameters.


Poly(vinylidene fluoride) Microporous films Permeability Structure-property relations Piezoelectric properties 


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Copyright information

© Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • G. K. Elyashevich
    • 1
    Email author
  • I. S. Kuryndin
    • 1
  • I. Yu. Dmitriev
    • 1
  • V. K. Lavrentyev
    • 1
  • N. N. Saprykina
    • 1
  • V. Bukošek
    • 2
  1. 1.Institute of Macromolecular CompoundsRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Faculty for Natural Sciences and EngineeringUniversity of LjubljanaLjubljanaSlovenia

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