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dc.contributor.authorYang, Zhi
dc.contributor.authorChaieb, Saharoui
dc.contributor.authorHemar, Yacine
dc.contributor.authordeCampo, Liliana
dc.contributor.authorRehm, Christine
dc.contributor.authorMcGillivray, Duncan James
dc.date.accessioned2015-12-09T12:48:37Z
dc.date.available2015-12-09T12:48:37Z
dc.date.issued2015
dc.identifier.citationInvestigating Linear and Nonlinear Viscoelastic behaviour and microstructures of Gelatine-Multiwalled carbon nanotubes composites 2015 RSC Adv.
dc.identifier.issn2046-2069
dc.identifier.doi10.1039/C5RA22744E
dc.identifier.urihttp://hdl.handle.net/10754/583473
dc.description.abstractWe have investigated the linear and nonlinear rheology of various gelatine-multiwalled carbon nanotube (gel-MWNT) composites, namely physically-crosslinked-gelatine gel-MWNT composites, chemically-crosslinked-gelatine gel-MWNT composites, and chemically-physically-crosslinked-gelatine gel-MWNT composites. Further, the internal structures of these gel-MWNT composites were characterized by ultra-small angle neutron scattering and scanning electron microscopy. The adsorption of gelatine onto the surface of MWNT is also investigated to understand gelatine-assisted dispersion of MWNT during ultrasonication. For all gelatine gels, addition of MWNT increases their complex modulus. The dependence of storage modulus with frequency for gelatine-MWNT composites is similar to that of the corresponding neat gelatine matrix. However, by incorporating MWNT, the dependence of the loss modulus on frequency is reduced. The linear viscoelastic region is decreased approximately linearly with the increase of MWNT concentration. The pre-stress results demonstrate that the addition of MWNT does not change the strain-hardening behaviour of physically-crosslinked gelatine gel. However, the addition of MWNT can increase the strain-hardening behaviour of chemically-crosslinked gelatine gel, and chemically-physically crosslinked gelatine gel. Results from light microscopy, cryo-SEM, and USANS demonstrate the hierarchical structures of MWNT, including that tens-of-micron scale MWNT agglomerates are present. Furthermore, the adsorption curve of gelatine onto the surface of MWNT follows two-stage pseudo-saturation behaviour.
dc.language.isoen
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C5RA22744E
dc.rightsArchived with thanks to RSC Adv.
dc.titleInvestigating Linear and Nonlinear Viscoelastic behaviour and microstructures of Gelatine-Multiwalled carbon nanotubes composites
dc.typeArticle
dc.contributor.departmentBioscience Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalRSC Adv.
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
dc.contributor.institutionThe Riddet Institute, Palmerston North, New Zealand
dc.contributor.institutionBragg Institute, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia
dc.contributor.institutionMacDiarmid Institute for Advanced Materials and Nanotechnology, PO Box 600, Wellington 6140, New Zealand
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personChaieb, Sahraoui
refterms.dateFOA2016-12-01T00:00:00Z


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