Preparation and properties of multiwalled carbon nanotube/epoxy-amine composites

Jyotishkumar, P; Logakis, E; George, SM; Pionteck, J; Haussler, L; Hassler, R; Pissis, P; Thomas, S

dc.contributor.author	Jyotishkumar, P	en
dc.contributor.author	Logakis, E	en
dc.contributor.author	George, SM	en
dc.contributor.author	Pionteck, J	en
dc.contributor.author	Haussler, L	en
dc.contributor.author	Hassler, R	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Thomas, S	en
dc.date.accessioned	2014-03-01T11:47:08Z
dc.date.available	2014-03-01T11:47:08Z
dc.date.issued	2012	en
dc.identifier.issn	00218995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/38101
dc.subject	Epoxy composites	en
dc.subject	Fracture toughness	en
dc.subject	Impact strength	en
dc.subject	Thermal properties	en
dc.subject	Volume shrinkage	en
dc.title	Preparation and properties of multiwalled carbon nanotube/epoxy-amine composites	en
heal.type	other	en
heal.identifier.primary	10.1002/app.37674	en
heal.identifier.secondary	http://dx.doi.org/10.1002/app.37674	en
heal.publicationDate	2012	en
heal.abstract	Different amounts of multiwalled carbon tubes (MWCNTs) were incorporated into an epoxy resin based on diglycidyl ether of bisphenol A and both epoxy precursor and composite were cured with 4,4'-diamino diphenyl sulfone. Transmission and scanning electron microscopy demonstrated that the carbon nanotubes are dispersed well in the epoxy matrix. Differential scanning calorimetry measurements confirmed the decrease in overall cure by the addition of MWCNTs. A decrease in volume shrinkage of the epoxy matrix caused by the addition of MWCNTs was observed by pressure-volume-temperature measurements. Thermomechanical and dynamic mechanical analysis were performed for the MWCNT/epoxy composites, showing that the Tg was slightly affected, whereas the dimensional stability and stiffness are improved by the addition of MWCNTs. Electrical conductivity measurements of the composite samples showed that an insulator to conductor transition takes place between 0.019 and 0.037 wt % MWCNTs. The addition of MWCNTs induces an increase in both impact strength (18%) and fracture toughness (38%) of the epoxy matrix with very low filler content. © 2012 Wiley Periodicals, Inc.	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/app.37674	en