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dc.contributor.authorCOLEMAN, JONATHANen
dc.contributor.authorBLAU, WERNERen
dc.date.accessioned2010-07-12T15:52:08Z
dc.date.available2010-07-12T15:52:08Z
dc.date.issued2007en
dc.date.submitted2007en
dc.identifier.citationUmar Khan, Kevin Ryan, Werner J. Blau, Jonathan N. Coleman, The effect of solvent choice on the mechanical properties of carbon nanotube polymer composites, Composites Science and Technology, 67, 15-16, 2007, 3158 - 3167en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/40253
dc.descriptionPUBLISHEDen
dc.description.abstractDispersions of single walled nanotubes in N-methyl-2-pyrrolidone have been exposed to water and variations in storage temperature. The subsequent degradation of dispersion quality has been monitored using sedimentation, UV-vis-NIR, and AFM measurements. Four parameters derived from AFM; the root-mean-square bundle diameter, the total number of dispersed objects (individuals and bundles) per unit volume of dispersion, the number fraction of individual nanotubes, and the number of individual nanotubes per unit volume of dispersion were used to quantitatively characterize the dispersion quality as a function of water content and storage temperature. In addition the positions of the nanotube absorption peaks were used to track dispersion quality, with redshifts taken as an indication of aggregation. It was found that water can rapidly shift the dispersion to a new but more aggregated equilibrium state. In particular the population of individual nanotubes falls to zero for relatively low amounts of added water. The dispersion quality decreases with increasing water content, reaching a plateau for all metrics by 20 vol% added water. In addition, it was also identified that low temperature treatment, i.e. -16, -18, -20, and -22 ?C (all above the freezing point of NMP) does not influence the dispersion quality and stability regardless of the standing time. However, freezing (-80 ?C) or heating (80 ?C ) the dispersion leads to a substantial degradation of the dispersion quality and stability.en
dc.description.sponsorshipThe authors wish to thank Miss Jinghuan Li for her help in low temperature experiments, also thank SFI (through the Research Frontier Program) and the Centre for Research on Adaptive Nanostructures & Nanodevices for their financial support.en
dc.format.extent3158en
dc.format.extent3167en
dc.language.isoenen
dc.relation.ispartofseriesComposites Science and Technologyen
dc.relation.ispartofseries67en
dc.relation.ispartofseries15-16en
dc.rightsYen
dc.subjectPhysicsen
dc.subjectnanotubesen
dc.titleThe effect of solvent choice on the mechanical properties of carbon nanotube-polymer compositesen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/colemajen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/wblauen
dc.identifier.rssinternalid56244en
dc.identifier.rssurihttp://dx.doi.org/10.1016/j.compscitech.2007.04.015en
dc.contributor.sponsorScience Foundation Ireland (SFI)en


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