Investigation of the physical properties of PVDF thin films obtained by 4D printing

In this work, we searched for the optimal way to create ferroelectric nanostructured composite materials based on 4D-printed polyvinylidene fluoride polymer films. Method fused deposition modeling allow using polyvinylidene fluoride and its copolymers not only in microelectronics as pyroelectric and...

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Bibliographic Details
Published in:	Fiziko-himičeskie aspekty izučeniâ klasterov, nanostruktur i nanomaterialov (Online) no. 14; pp. 561 - 571
Main Authors:	N.V. Vostrov, A.V. Solnyshkin, I.M. Morsakov, A.N. Belov, P.N. Krylov
Format:	Journal Article
Language:	Russian
Published:	Tver State University 01-12-2022
Subjects:	3d printing 4d printing additive technologies composite piezoelectric effect polymer ferroelectric pyroelectric effect scanning electron microscope spontaneous polarization
Online Access:	Get full text
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Summary:	In this work, we searched for the optimal way to create ferroelectric nanostructured composite materials based on 4D-printed polyvinylidene fluoride polymer films. Method fused deposition modeling allow using polyvinylidene fluoride and its copolymers not only in microelectronics as pyroelectric and piezoelectric sensors, as well as creating dynamic memory elements, organic solar cells and used in robotics. At the first stage of the work, the authors were selected optimal extrusion parameters for the manufacture of a thread from powder and granules. The next stage of the work included the analysis and determination of printing parameters by the method of layer-by-layer filament deposition to obtain the best quality of polymer films. Using scanning electron microscopy, the existence of two phases, a polar β-phase and a nonpolar α-phase, is shown, where the crystalline phase is observed in the form of lamellar crystals chaotically oriented in the α-phase matrix. Pyroelectric measurements performed by the dynamic method showed the presence of a noticeable pyroelectric response in polyvinylidene fluoride films obtained using additive technologies, bypassing the orientation extraction stage. The calculation of the pyroelectric coefficient gives values corresponding to the values of the pyroelectric coefficient for polyvinylidene fluoride samples obtained by traditional methods.
ISSN:	2226-4442 2658-4360
DOI:	10.26456/pcascnn/2022.14.561