Composite ferroelectric membranes based on vinylidene fluoride-tetrafluoroethylene copolymer and polyvinylpyrrolidone for wound healing

Tamara S. Tverdokhlebova, Ludmila S. Antipina, Valeriya L. Kudryavtseva, Ksenia S. Stankevich, Ilya M. Kolesnik, Evgenia A. Senokosova, Elena A. Velikanova, Larisa V. Antonova, Dmitry V. Vasilchenko, Georgiy T. Dambaev, Evgenii V. Plotnikov, Vyacheslav M. Bouznik, Evgeny N. Bolbasov

Research output: Contribution to journalArticlepeer-review

Abstract

Wound healing is a complex process and an ongoing challenge for modern medicine. Herein, we present the results of study of structure and properties of ferroelectric composite polymer membranes for wound healing. Membranes were fabricated by electrospinning from a solution of vinylidene fluoride/tetrafluoroethylene copolymer (VDF–TeFE) and polyvinylpyrrolidone (PVP) in dimethylformamide (DMF). The effects of the PVP content on the viscosity and conductivity of the spinning solution, DMF concentration, chemical composition, crystal structure, and conformation of VDF–TeFE macromolecules in the fabricated materials were studied. It was found that as PVP amount increased, the viscosity and conductivity of the spinning solutions decreased, resulting in thinner fibers. Using FTIR and XRD methods, it was shown that if the PVP content was lower than 50 wt %, the VDF–TeFE copolymer adopted a flat zigzag conformation (TTT conformation) and crystalline phases with ferroelectric properties were formed. Gas chromatography results indicated that an increase in the PVP concentration led to a higher residual amount of DMF in the material, causing cytotoxic effects on 3T3L1 fibroblasts. In vivo studies demonstrated that compared to classical gauze dressings impregnated with a solution of an antibacterial agent, ferroelectric composite membranes with 15 wt % PVP provided better conditions for the healing of purulent wounds.

Original languageEnglish
Article number21
Pages (from-to)1-16
Number of pages16
JournalMembranes
Volume11
Issue number1
DOIs
Publication statusPublished - Jan 2021

Keywords

  • Composite
  • Ferroelectrics
  • Membranes
  • Polyvinylpyrrolidone
  • Wound healing

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Filtration and Separation

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