Investigation of the Effect of Orientational Drawing on the Structural and Electroactive Properties of Vinylidene Fluoride-Tetrafluoroethylene Copolymer Films by Raman Scattering Spectroscopy
Derimedved D. K.1,2,3, Buryanskaya E. L.2,4, Maltsev A. A.2,5, Konovalova I. B.2,6, Mareev E. I.3, Mikhalyov P. A.2,3, Minaev N. V.3
1National Research Nuclear University “MEPhI”, Moscow, Russia
2Bauman Moscow State Technical University, Moscow, Russia
3Institute of Photon Technologies, Kurchatov Complex of Crystallography and Photonics, National Research Center "Kurchatov Institute", Troitsk, Moscow, Russia
4National University of Science and Technology MISiS, Moscow, Russia
5Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
6Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
Email: drmdvdd@gmail.com
The effect of uniaxial orientational drawing on the structural and electroactive properties of vinylidene fluoride-tetrafluoroethylene copolymer (VDF-TFE) films was investigated using Raman scattering spectroscopy (RS). Analysis of RS spectra suggests a significant increase in the fraction of the ferroactive β-phase upon mechanical drawing, indirectly confirmed by an increase in the piezoelectric coefficient. A correlation between structural changes and improved electrical strength of the material was established. The proposed drawing regimes and methods for analyzing the structural composition of ferroelectric polymer films can be used to create biomedical piezoelectric devices. Keywords: Raman scattering spectroscopy, ferroelectric polymers, piezoelectricity, vinylidene fluoride-tetrafluoroethylene copolymer.
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