Curing of epoxy/carbon nanotubes physical networks

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dc.contributor.authorChapartegui, Maialen
dc.contributor.authorMarkaide, Nerea
dc.contributor.authorFlorez, Sonia
dc.contributor.authorElizetxea, Cristina
dc.contributor.authorFernandez, Mercedes
dc.contributor.authorSantamaria, Anton
dc.contributor.institutionPOLIMEROS
dc.date.accessioned2024-07-24T12:11:06Z
dc.date.available2024-07-24T12:11:06Z
dc.date.issued2012-03
dc.description.abstractA melt-mixing procedure has been used to disperse multi-walled carbon nanotubes (MWCNT) in an epoxy matrix. According to dynamic viscoelastic results, a physical network is formed for carbon nanotube concentrations of 0.3 weight per cent (wt%) and above. The temperature activated curing process is followed analyzing the evolution of the dynamic viscoelastic functions and the dielectric loss with time. Curing process from a physical to a chemical network is monitored. The presence of MWCNT accelerates curing, even when the rheological percolation is not reached (absence of physical network). Several hypotheses are considered to explain this result. Electrical conductivity decreases during cure, so lower electrical conductivities are found for cured MWCNT/epoxy samples than for dispersions: this is explained by a distortion of nanotubes physical network and a reduction of the ionic conductivity contribution of the liquid phase.en
dc.description.statusPeer reviewed
dc.format.extent8
dc.identifier.citationChapartegui , M , Markaide , N , Florez , S , Elizetxea , C , Fernandez , M & Santamaria , A 2012 , ' Curing of epoxy/carbon nanotubes physical networks ' , Polymer Engineering and Science , vol. 52 , no. 3 , pp. 663-670 . https://doi.org/10.1002/pen.22131
dc.identifier.doi10.1002/pen.22131
dc.identifier.issn0032-3888
dc.identifier.urihttps://hdl.handle.net/11556/4147
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84857237861&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofPolymer Engineering and Science
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsGeneral Chemistry
dc.subject.keywordsPolymers and Plastics
dc.subject.keywordsMaterials Chemistry
dc.titleCuring of epoxy/carbon nanotubes physical networksen
dc.typejournal article
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