Influence of Polyvinylpyrrolidone on Thermoelectric Properties of Melt-Mixed Polymer/Carbon Nanotube Composites

Simple item page
dc.bibliographicCitation.firstPage181
dc.bibliographicCitation.issue1
dc.bibliographicCitation.volume14
dc.contributor.authorKrause, Beate
dc.contributor.authorImhoff, Sarah
dc.contributor.authorVoit, Brigitte
dc.contributor.authorPötschke, Petra
dc.date.accessioned2023-06-02T15:02:03Z
dc.date.available2023-06-02T15:02:03Z
dc.date.issued2023
dc.description.abstractFor thermoelectric applications, both p- and n-type semi-conductive materials are combined. In melt-mixed composites based on thermoplastic polymers and carbon nanotubes, usually the p-type with a positive Seebeck coefficient (S) is present. One way to produce composites with a negative Seebeck coefficient is to add further additives. In the present study, for the first time, the combination of single-walled carbon nanotubes (SWCNTs) with polyvinylpyrrolidone (PVP) in melt-mixed composites is investigated. Polycarbonate (PC), poly(butylene terephthalate) (PBT), and poly(ether ether ketone) (PEEK) filled with SWCNTs and PVP were melt-mixed in small scales and thermoelectric properties of compression moulded plates were studied. It could be shown that a switch in the S-value from positive to negative values was only possible for PC composites. The addition of 5 wt% PVP shifted the S-value from 37.8 µV/K to −31.5 µV/K (2 wt% SWCNT). For PBT as a matrix, a decrease in the Seebeck coefficient from 59.4 µV/K to 8.0 µV/K (8 wt% PVP, 2 wt% SWCNT) could be found. In PEEK-based composites, the S-value increased slightly with the PVP content from 48.0 µV/K up to 54.3 µV/K (3 wt% PVP, 1 wt% SWCNT). In addition, the long-term stability of the composites was studied. Unfortunately, the achieved properties were not stable over a storage time of 6 or 18 months. Thus, in summary, PVP is not suitable for producing long-term stable, melt-mixed n-type SWCNT composites.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/12303
dc.identifier.urihttp://dx.doi.org/10.34657/11335
dc.language.isoeng
dc.publisherBasel : MDPI
dc.relation.doihttps://doi.org/10.3390/mi14010181
dc.relation.essn2072-666X
dc.relation.ispartofseriesMicromachines 14 (2023), Nr. 1eng
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.subjectelectron dopingeng
dc.subjectnanotubeseng
dc.subjectpolymer compositeseng
dc.subjectthermoelectriceng
dc.subject.ddc620
dc.titleInfluence of Polyvinylpyrrolidone on Thermoelectric Properties of Melt-Mixed Polymer/Carbon Nanotube Compositeseng
dc.typearticle
dc.typeText
dcterms.bibliographicCitation.journalTitleMicromachines
local.doifilter.overrideja
tib.accessRightsopenAccess
wgl.contributorIPF
wgl.subjectIngenieurwissenschaftenger
wgl.typeZeitschriftenartikelger
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Influence_of_Polyvinylpyrrolidone.pdf
Size:
1.27 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Ingenieurwissenschaften