DC FieldValueLanguage
dc.contributor.authorStarkova, Olesja-
dc.contributor.authorChandrasekaran, Swetha-
dc.contributor.authorSchnoor, Thea-
dc.contributor.authorSevcenko, Jevgenijs-
dc.contributor.authorSchulte, Karl-
dc.date.accessioned2019-04-29T14:22:34Z-
dc.date.available2019-04-29T14:22:34Z-
dc.date.issued2019-06-
dc.identifier.citationPolymer Degradation and Stability (164): 127-135 (2019-06)de_DE
dc.identifier.issn0141-3910de_DE
dc.identifier.urihttp://hdl.handle.net/11420/2551-
dc.description.abstractWater absorption-desorption-resorption and swelling were studied for a DGEBA-based amine-cured epoxy resin filled with four types of carbon nanoparticles: multiwall carbon nanotubes (MWCNT), graphite nano-platelets (GnP), expanded graphite platelets, and carbon black. Nanocomposites are characterised by lower diffusivity (down to 20% for epoxy/GnP) and increased water sorption capacity compared to the neat epoxy. Anomalous water absorption and swelling of nanocomposites is finely described by the diffusion-relaxation model. The relaxation times, considered as quantitative indicators of changes in segmental mobility of the polymer, increased with addition of nanoparticles and decreased with temperature. Epoxy/MWCNT composites are characterised by the longest relaxation times (twofold increase) and highest Deborah numbers compared to the neat epoxy and other nanocomposites. Hydrothermal ageing effects and efficiency of nanoparticles on thermal and thermomechanical properties of the epoxy were estimated. Water uptake in nanocomposites is accompanied by several competing processes: plasticization, after-cure, and physical ageing of the polymer matrix.en
dc.language.isoende_DE
dc.relation.ispartofPolymer degradation and stabilityde_DE
dc.titleAnomalous water diffusion in epoxy/carbon nanoparticle compositesde_DE
dc.typeArticlede_DE
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.abstract.englishWater absorption-desorption-resorption and swelling were studied for a DGEBA-based amine-cured epoxy resin filled with four types of carbon nanoparticles: multiwall carbon nanotubes (MWCNT), graphite nano-platelets (GnP), expanded graphite platelets, and carbon black. Nanocomposites are characterised by lower diffusivity (down to 20% for epoxy/GnP) and increased water sorption capacity compared to the neat epoxy. Anomalous water absorption and swelling of nanocomposites is finely described by the diffusion-relaxation model. The relaxation times, considered as quantitative indicators of changes in segmental mobility of the polymer, increased with addition of nanoparticles and decreased with temperature. Epoxy/MWCNT composites are characterised by the longest relaxation times (twofold increase) and highest Deborah numbers compared to the neat epoxy and other nanocomposites. Hydrothermal ageing effects and efficiency of nanoparticles on thermal and thermomechanical properties of the epoxy were estimated. Water uptake in nanocomposites is accompanied by several competing processes: plasticization, after-cure, and physical ageing of the polymer matrix.de_DE
tuhh.publisher.doi10.1016/j.polymdegradstab.2019.04.010-
tuhh.publication.instituteKunststoffe und Verbundwerkstoffe M-11de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
tuhh.institute.germanKunststoffe und Verbundwerkstoffe M-11de
tuhh.institute.englishKunststoffe und Verbundwerkstoffe M-11de_DE
tuhh.gvk.hasppnfalse-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.volume164de_DE
tuhh.container.startpage127de_DE
tuhh.container.endpage135de_DE
item.grantfulltextnone-
item.creatorGNDStarkova, Olesja-
item.creatorGNDChandrasekaran, Swetha-
item.creatorGNDSchnoor, Thea-
item.creatorGNDSevcenko, Jevgenijs-
item.creatorGNDSchulte, Karl-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.fulltextNo Fulltext-
item.openairetypeArticle-
item.creatorOrcidStarkova, Olesja-
item.creatorOrcidChandrasekaran, Swetha-
item.creatorOrcidSchnoor, Thea-
item.creatorOrcidSevcenko, Jevgenijs-
item.creatorOrcidSchulte, Karl-
item.languageiso639-1en-
item.cerifentitytypePublications-
crisitem.author.deptKunststoffe und Verbundwerkstoffe M-11-
crisitem.author.deptKunststoffe und Verbundwerkstoffe M-11-
crisitem.author.deptKunststoffe und Verbundwerkstoffe M-11-
crisitem.author.orcid0000-0003-1689-5163-
crisitem.author.orcid0000-0001-6521-0488-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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