Comparative Study of PVDF Sheets and Their Sensitivity to Mechanical Vibrations: The Role of Dimensions, Molecular Weight, Stretching and Poling

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dc.contributor.authorMrlík, Miroslavcs
dc.contributor.authorOsička, Josefcs
dc.contributor.authorCvek, Martincs
dc.contributor.authorIlčíková, Markétacs
dc.contributor.authorSrnec, Petercs
dc.contributor.authorGorgol, Danilacs
dc.contributor.authorTofel, Pavelcs
dc.coverage.issue7cs
dc.coverage.volume11cs
dc.date.accessioned2021-08-12T14:55:51Z
dc.date.available2021-08-12T14:55:51Z
dc.date.issued2021-06-22cs
dc.description.abstractThis paper is focused on the comparative study of the vibration sensing capabilities of poly(vinylidene fluoride) (PVDF) sheets. The main parameters such as molecular weight, initial sample thickness, stretching and poling were systematically applied, and their impact on sensing behavior was examined. The mechanical properties of prepared sheets were investigated via tensile testing on the samples with various initial thicknesses. The transformation of the -phase to the electro-active -phase was analyzed using FTIR after applying stretching and poling procedures as crucial post-processing techniques. As a complementary method, the XRD was applied, and it confirmed the crystallinity data resulting from the FTIR analysis. The highest degree of phase transformation was found in the PVDF sheet with a moderate molecular weight (Mw of 275 kDa) after being subjected to the highest axial elongation (500%); in this case, the -phase content reached approximately 90%. Finally, the vibration sensing capability was systematically determined, and all the mentioned processing/molecular parameters were taken into consideration. The whole range of the elongations (from 50 to 500%) applied on the PVDF sheets with an Mw of 180 and 275 kDa and an initial thickness of 0.5 mm appeared to be sufficient for vibration sensing purposes, showing a d33 piezoelectric charge coefficient from 7 pC N1 to 9.9 pC N1. In terms of the d33, the PVDF sheets were suitable regardless of their Mw only after applying the elongation of 500%. Among all the investigated samples, those with an initial thickness of 1.0 mm did not seem to be suitable for vibration sensing purposes.en
dc.formattextcs
dc.format.extent1-11cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationNanomaterials. 2021, vol. 11, issue 7, p. 1-11.en
dc.identifier.doi10.3390/nano11071637cs
dc.identifier.issn2079-4991cs
dc.identifier.other172184cs
dc.identifier.urihttp://hdl.handle.net/11012/200953
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofNanomaterialscs
dc.relation.urihttps://www.mdpi.com/2079-4991/11/7/1637/htmcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2079-4991/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectpoly(vinylidene fluoride)en
dc.subjectcrystallinityen
dc.subjectphysical propertiesen
dc.subjectvibration sensingen
dc.subjectd33en
dc.titleComparative Study of PVDF Sheets and Their Sensitivity to Mechanical Vibrations: The Role of Dimensions, Molecular Weight, Stretching and Polingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172184en
sync.item.dbtypeVAVen
sync.item.insts2022.05.13 00:54:06en
sync.item.modts2022.05.13 00:14:31en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav fyzikycs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Inovační technologie v keramicecs
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Ústav fyziky
Inovační technologie v keramice