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AuthorChamakh M.M.
AuthorMrlik M.
AuthorLeadenham S.
AuthorBazant P.
AuthorOsicka J.
AuthorAlmaadeed M.A.A.
AuthorErturk A.
AuthorKuritka I.
Available date2022-02-27T09:30:33Z
Publication Date2020
Publication NameNanomaterials
ResourceScopus
Identifierhttp://dx.doi.org/10.3390/nano10122345
URIhttp://hdl.handle.net/10576/27451
AbstractThis study deals with the effect of zinc oxide (ZnO) star-like filler addition to the poly(vinylidene fluoride) (PVDF) matrix, and its effect on the structural and physical properties and consequences to the vibration sensing performance. Microwave-assisted synthesis in open vessel setup was optimized for the preparation of the star-like shape of ZnO crystalline particles. The crystalline and star-like structure was confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDX). Furthermore, the PVDF-based composites were prepared using a spin-coating technique from solution. An investigation of the transformation of the ? crystalline phase to the ? crystalline phase of the neat PVDF matrix and with various filler concentrations was performed using Fourier-Transform infrared (FTIR) spectroscopy, which shows an enhanced ?-phase from 44.1% to 66.4% for neat PVDF and PVDF with 10 wt.% of particles, respectively. Differential scanning calorimetry (DSC) measurements and investigation showed enhanced crystallinity and melting enthalpy of the composite systems in comparison to neat PVDF, since ZnO star-like particles act as nucleating agents. The impact of the filler content on the physical properties, such as thermal and dynamic mechanical properties, which are critical for the intended applications, were investigated as well, and showed that fabricated composites exhibit enhanced thermal stability. Because of its dynamic mechanical properties, the composites can still be utilized as flexible sensors. Finally, the vibration sensing capability was systematically investigated, and it was shown that the addition of ZnO star-like filler enhanced the value of the thickness mode d33 piezoelectric constant from 16.3 pC/N to 29.2 pC/N for neat PVDF and PVDF with 10 wt.% of ZnO star-like particles.
SponsorThis article was made possible by NPRP grant no. NPRP-6-282-2-119 from the Qatar National Research Fund (a member of the Qatar Foundation). The statements made herein are solely the responsibility of the authors. Author M.M. and J.O. acknowledge the Czech Science Foundation grant no. 19-17457S for financial support. The authors also gratefully acknowledge the Ministry of Education, Youth and Sports of the Czech Republic?DKRVO (RP/CPS/2020/003). The authors also acknowledge the Central Laboratory Unit of Qatar University for FTIR, TGA and DSC measurements.
Languageen
PublisherMDPI AG
SubjectPhysical properties
Poly(vinylidene fluoride)
Structure characterization
Vibration sensing
ZnO star-like particles
TitleVibration sensing systems based on poly(Vinylidene fluoride) and microwave-assisted synthesized zno star-like particles with controllable structural and physical properties
TypeArticle
Pagination1-15
Issue Number12
Volume Number10
dc.accessType Open Access


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