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DC poleHodnotaJazyk
dc.contributor.authorHornak, Jaroslav
dc.contributor.authorKadlec, Petr
dc.contributor.authorKopřiva, Jiří
dc.contributor.authorPolanský, Radek
dc.date.accessioned2022-06-06T10:00:30Z-
dc.date.available2022-06-06T10:00:30Z-
dc.date.issued2022
dc.identifier.citationHORNAK, J. KADLEC, P. KOPŘIVA, J. POLANSKÝ, R. Dielectric, structural and mechanical properties of thermally aged biaxially oriented polymeric substrates for flexible electronics. POLYMER DEGRADATION AND STABILITY, 2022, roč. 199, č. May 2022, s. 1-10. ISSN: 0141-3910cs
dc.identifier.issn0141-3910
dc.identifier.uri2-s2.0-85127113721
dc.identifier.urihttp://hdl.handle.net/11025/47717
dc.format10 s.cs
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofseriesPolymer Degradation And Stabilityen
dc.rightsPlný text je přístupný v rámci univerzity přihlášeným uživatelům.cs
dc.rights© Elsevieren
dc.titleDielectric, structural and mechanical properties of thermally aged biaxially oriented polymeric substrates for flexible electronicsen
dc.typečlánekcs
dc.typearticleen
dc.rights.accessrestrictedAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedTwo materials, polyethylene naphthalate (PEN) and polyethylene terephthalate (PET), which are often used as flexible substrates for electronics, were exposed to accelerated thermal aging at temperatures of 190 °C and 210 °C for 50 0 0 and 20 0 0 h, respectively. Changes in their thermal, dielectric, and me- chanical properties were investigated. The results revealed that dielectric losses increase slower for PET than for PEN at lower aging temperatures. In contrast, at higher aging temperatures, similar behavior was observed for both materials. During aging, the dissipation factors of PET and PEN increased by one order of magnitude over those of the original states. The dielectric frequency-temperature characteristics obtained by broadband dielectric spectroscopy (BDS) shifted and indicated changes in the individual di- electric relaxation mechanisms (i.e., α, β, β∗). Discoloration induced by thermal aging and quantified by ultraviolet–visible spectroscopy by the peak at 453 nm was detected primarily in the spectrum of PEN. The mechanical tensile strength of PET deteriorated considerably (10 times) after only a few hundred hours, whereas PEN was stable after even longer exposure times. It was found that all of the changes mentioned above are primarily related to the change in the crystalline-to-amorphous phase ratio, as demonstrated by differential scanning calorimetry (DSC) and supported by density measurements.en
dc.subject.translateddielectric propertiesen
dc.subject.translatedflexible substratesen
dc.subject.translatedpolyethylene naphthalateen
dc.subject.translatedpolyethylene terephthalateen
dc.subject.translatedstructural propertiesen
dc.subject.translatedthermal agingen
dc.identifier.doi10.1016/j.polymdegradstab.2022.109906
dc.type.statusPeer-revieweden
dc.identifier.document-number791619300001
dc.identifier.obd43935980
dc.project.IDEF16_026/0008382/Uhlíkové alotropy s racionalizovanými nanorozhraními a nanospoji pro environmentální a biomedicínské aplikacecs
dc.project.IDGA20-03913S/Organické senzory plynů - nové struktury, jejich vlastnosti a funkcecs
dc.project.IDSGS-2021-003/Materiály, technologie a diagnostika v elektrotechnicecs
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