Aspect ratio effects of multi-walled carbon nanotubes on electrical, mechanical, and thermal properties of polycarbonate/MWCNT composites

dc.bibliographicCitation.firstPage73
dc.bibliographicCitation.issue1
dc.bibliographicCitation.journalTitleJournal of Polymer Science Part B: Polymer Physicseng
dc.bibliographicCitation.lastPage83
dc.bibliographicCitation.volume52
dc.contributor.authorGuo, Jiaxi
dc.contributor.authorLiu, Yanjun
dc.contributor.authorPrada-Silvy, Ricardo
dc.contributor.authorTan, Yongqiang
dc.contributor.authorAzad, Samina
dc.contributor.authorKrause, Beate
dc.contributor.authorPötschke, Petra
dc.contributor.authorGrady, Brian P.
dc.date.accessioned2023-10-13T09:22:13Z
dc.date.available2023-10-13T09:22:13Z
dc.date.issued2014
dc.description.abstractTwo multi-walled carbon nanotubes (MWCNTs) having relatively high aspect ratios of 313 and 474 with approximately the same diameter were melt mixed with polycarbonate (PC) in a twin-screw conical micro compounder. The effects of aspect ratio on the electrical, mechanical, and thermal properties of the PC/MWCNT composites were investigated. Electrical conductivities and storage moduli of the filled samples are found to be independent of the starting aspect ratio for these high aspect ratio tubes; although the conductivities and storage moduli are still significantly higher than values of composites made with nanotubes having more commercially common aspect ratios of ∼100. Transmission electron microscopy results suggest that melt-mixing reduces these longer nanotubes to the same length, but still approximately two times longer than the length of commercially common aspect ratio tubes after melt-mixing. Molecular weight measurements show that during melt-mixing the longer nanotubes significantly degrade the molecular weight of the polymer as compared to very similar nanotubes with aspect ratio ∼100. Because of the molecular weight reduction glass transition temperatures predictably show a large decrease with increasing nanotube concentration. © 2013 Wiley Periodicals, Inc.eng
dc.description.versionacceptedVersion
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/12474
dc.identifier.urihttps://doi.org/10.34657/11504
dc.language.isoeng
dc.publisherHoboken, NJ [u.a.] : Wiley
dc.relation.doi10.1002/polb.23402
dc.relation.issn0887-6266
dc.rights.licenseEs gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject.ddc530
dc.subject.ddc660
dc.subject.otheraspect ratioeng
dc.subject.othercarbon nanotubeseng
dc.subject.otherelectrical conductivityeng
dc.subject.othernanocompositeseng
dc.subject.otherpercolation thresholdeng
dc.subject.otherpolycarbonateseng
dc.subject.otherprocessingeng
dc.titleAspect ratio effects of multi-walled carbon nanotubes on electrical, mechanical, and thermal properties of polycarbonate/MWCNT compositeseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccess
wgl.contributorIPF
wgl.subjectChemie
wgl.typeZeitschriftenartikel
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