Original title: Multi-wall carbon nanotube networks prepared from pure MWCNT and their oxidised forms effect of compressive strain on electric resistence
Authors: Olejník, R. ; Slobodian, P. ; Říha, Pavel ; Kimmer, D. ; Sáha, P.
Document type: Papers
Conference/Event: NANOCON 2010. International Conference /2./, Olomouc (CZ), 2010-10-12 / 2010-10-14
Year: 2010
Language: eng
Abstract: Multi-wall carbon nanotube networks were prepared by filtration of CNT aqueous dispersions. CNT dispersions were prepared with the help of surfactant system (sodium dodecyl sulfate with amylalcohol) by ultrasonication. Three types of MWCNT tubes were used. The first were pure CNT delivered by supplier. The others were oxidized CNT oxidized (1. acid solution of KMnO4; 2. the mixture of acids H2SO4 + HNO3). It was found that oxidization significantly changes properties of prepared carbon nanotube networks. There were observed differences in porous structures networks analyzed by SEM microscopy. Moreover, the apparent density of prepared MWCNT networks also changes according to the used CNT. The network electrical resistance is also affected by process of MWCNT oxidation as well as by compressive strain. It was found that the network resistance is sensitive to compressive strain both in the course of strain growth and when loading/unloading cycles are imposed.
Keywords: carbon nanotube network; compression; electrical resistence; stress sensor
Project no.: CEZ:AV0Z20600510 (CEP), IAA200600803 (CEP)
Funding provider: GA AV ČR
Host item entry: Conference Proceedings, ISBN 978-80-87294-19-2

Institution: Institute of Hydrodynamics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0202165

Permalink: http://www.nusl.cz/ntk/nusl-71623


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Research > Institutes ASCR > Institute of Hydrodynamics
Conference materials > Papers