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Electromagnetic interference shielding of polypyrrole nanostructures

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dc.title Electromagnetic interference shielding of polypyrrole nanostructures en
dc.contributor.author Moučka, Robert
dc.contributor.author Sedlačík, Michal
dc.contributor.author Prokeš, Jan
dc.contributor.author Kasparyan, Hayk
dc.contributor.author Valtera, Stanislav
dc.contributor.author Kopecký, Dušan
dc.relation.ispartof Synthetic Metals
dc.identifier.issn 0379-6779 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2020
utb.relation.volume 269
dc.type article
dc.language.iso en
dc.publisher Elsevier Ltd
dc.identifier.doi 10.1016/j.synthmet.2020.116573
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0379677920308250
dc.subject polypyrrole nanostructures en
dc.subject polypyrrole nanotubes en
dc.subject globular polypyrrole en
dc.subject polypyrrole microbarrels en
dc.subject electromagnetic interference shielding en
dc.subject electrical conductivity en
dc.subject deprotonation en
dc.description.abstract Polypyrrole (PPy) is an electrically conductive organic material perspective for application in the field of electromagnetic interference shielding (EMI). The presented fundamental study focuses on the shielding efficiency of three various morphologies of PPy (globules, nanotubes and microbarrels). Powdered samples in both protonated and deprotonated form were embedded at various concentrations (1, 3 and 5 % w/w) in a composite system with a transparent silicone matrix cured at temperatures 25 and 150 °C. The ability of PPy to reflect or absorb electromagnetic radiation in the C-band region covering the range from 5.85 to 8.2 GHz was evaluated. The relationship between the morphology of PPy, its DC and AC electrical conductivity, permittivity and shielding efficiency was studied. The PPy nanotubes with the DC conductivity of 60.8 S cm–1 exhibited shielding efficiency S21 = –13.27 dB at 5% w/w concentration in the composite, which corresponds to transparency of 21.7 % only. It was found that the magnitude of electrical conductivity together with the aspect ratio of PPy morphology determines the shielding efficiency whereas the type of morphology is responsible for absorption or reflection mechanism of EMI shielding. Hence, the appropriate adjustment of both the electrical conductivity and the morphology should be used in the future lightweight and flexible EMI shields with tunable shielding efficiency and mechanism of shielding. © 2020 Elsevier B.V. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1009939
utb.identifier.obdid 43881874
utb.identifier.scopus 2-s2.0-85091576892
utb.identifier.wok 000588106700036
utb.identifier.coden SYMED
utb.source j-scopus
dc.date.accessioned 2020-10-05T13:46:34Z
dc.date.available 2020-10-05T13:46:34Z
dc.description.sponsorship Ministry of Education, Youth and Sports of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic [RP/CPS/2020/006]; [A2_FCHI_2020_030]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Moučka, Robert
utb.contributor.internalauthor Sedlačík, Michal
utb.fulltext.affiliation Robert Moučka a, Michal Sedlačík a*, Jan Prokeš b, Hayk Kasparyan c, Stanislav Valtera c, Dušan Kopecký c* a Centre of Polymer Systems, Tomas Bata University in Zlín, 760 01, Zlín, Czech Republic b Faculty of Mathematics and Physics, Charles University, 180 00, Prague 8, Czech Republic c Faculty of Chemical Engineering, University of Chemistry and Technology, Prague, 166 28, Prague 6, Czech Republic * Corresponding authors. E-mail addresses: msedlacik@utb.cz (M. Sedlačík), jprokes@semi.mff.cuni.cz (J. Prokeš), kopeckyd@vscht.cz (D. Kopecký).
utb.fulltext.dates Received 30 June 2020 Received in revised form 28 August 2020 Accepted 8 September 2020 Available online 25 September 2020
utb.fulltext.sponsorship This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic – project DKRVO ( RP/CPS/2020/006 ) and Specific university research – grant No A2_FCHI_2020_030 .
utb.wos.affiliation [Moucka, Robert; Sedlacik, Michal] Tomas Bata Univ Zlin, Ctr Polymer Syst, Zlin 76001, Czech Republic; [Prokes, Jan] Charles Univ Prague, Fac Math & Phys, Prague 18000 8, Czech Republic; [Kasparyan, Hayk; Valtera, Stanislav; Kopecky, Dusan] Univ Chem & Technol, Fac Chem Engn, Prague 16628 6, Czech Republic
utb.scopus.affiliation Centre of Polymer Systems, Tomas Bata University in Zlín, Zlín, 760 01, Czech Republic; Faculty of Mathematics and Physics, Charles University, Prague 8, 180 00, Czech Republic; Faculty of Chemical Engineering, University of Chemistry and Technology, Prague 6, Prague, 166 28, Czech Republic
utb.fulltext.projects DKRVO
utb.fulltext.projects RP/CPS/2020/006
utb.fulltext.projects A2_FCHI_2020_030
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
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