Effect of gamma-irradiation on the mechanical properties of carbon nanotube yarns

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dc.contributor.authorMiao, Men_AU
dc.contributor.authorHawkins, Sen_AU
dc.contributor.authorCai, JYen_AU
dc.contributor.authorGengenbach, TRen_AU
dc.contributor.authorKnott, RBen_AU
dc.contributor.authorHuynh, CPen_AU
dc.date.accessioned2012-01-11T00:55:41Zen_AU
dc.date.available2012-01-11T00:55:41Zen_AU
dc.date.issued2011-11-01en_AU
dc.date.statistics2012-01-11en_AU
dc.description.abstractGamma-irradiation of carbon nanotube yarns in air has significantly improved the tensile strength and modulus of the yarns, presumably because of an increased interaction between the individual nanotubes. The improvement has been much greater for tightly structured yarns than for loosely structured yarns. Sonic pulse tests have also shown increased sound velocity and dynamic modulus in the carbon nanotube yarns as a result of gamma-irradiation treatment. X-ray photoelectron spectroscopic analyses on progenitor carbon nanotube forests show that gamma-irradiation treatment in air has dramatically increased the concentration of oxygen, for example as carboxyl groups, in the carbon nanotube assemblies in proportion to radiation dose, indicating that carbon nanotubes were oxidized under the ionizing effect of the gamma-irradiation. Such oxygen species are thought to contribute to the interaction between carbon nanotubes and thus to the improvement of carbon nanotube yarn mechanical properties. Crown Copyright (C) 2011 Published by Elsevier Ltd.en_AU
dc.identifier.citationMiao, M., Hawkins, S. C., Cai, J. Y., Gengenbach, T. R., Knott, R., & Huynh, C. P. (2011). Effect of gamma-irradiation on the mechanical properties of carbon nanotube yarns. Carbon, 49(14), 4940-4947. doi:10.1016/j.carbon.2011.07.026en_AU
dc.identifier.govdoc3865en_AU
dc.identifier.issn0008-6223en_AU
dc.identifier.issue14en_AU
dc.identifier.journaltitleCarbonen_AU
dc.identifier.pagination4940-4947en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.carbon.2011.07.026en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3974en_AU
dc.identifier.volume49en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCarbonen_AU
dc.subjectNanotubesen_AU
dc.subjectTensile propertiesen_AU
dc.subjectX-ray photoelectron spectroscopyen_AU
dc.subjectGamma radiationen_AU
dc.subjectVelocityen_AU
dc.titleEffect of gamma-irradiation on the mechanical properties of carbon nanotube yarnsen_AU
dc.typeJournal Articleen_AU
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