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Effect of functionalized nanotubes with HNO.sub.3./sub. on electrical sensory properties of carbon nanotubes/polyurethane composite under elongation
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SYSNO ASEP 0367462 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effect of functionalized nanotubes with HNO3 on electrical sensory properties of carbon nanotubes/polyurethane composite under elongation Author(s) Slobodian, P. (CZ)
Olejník, R. (CZ)
Říha, Pavel (UH-J) SAI, ORCID, RID
Sáha, P. (CZ)Source Title Mathematical Methods and Techniques in Engineering and Environmental Science. - Stevens Point, Wisconsin : WSEAS Press, 2011 / Demiralp M. ; Bojkovic Z. ; Repanovici A. - ISBN 978-1-61804-046-6 Pages s. 312-316 Number of pages 5 s. Action WSEAS International Conference on Sensors and Signals /4./ Event date 03.11.2011-05.11.2011 VEvent location Catania Country IT - Italy Event type WRD Language eng - English Country US - United States Keywords carbon nanotubes ; oxidation ; flexible composites ; strain sensor ; Gauge factor ; resistance Subject RIV JB - Sensors, Measurment, Regulation CEZ AV0Z20600510 - UH-J (2005-2011) Annotation Thermoplastic polyurethane elastomer PU/MWCNT network composite was prepared and tested as tensile strain sensing element. In the first step MWCNT aqueous dispersion was filtered thought PU filtering membrane prepared by technology of electrospinning. The filtering membrane remains as a part of final composite when this filter-supported MWCNT network is attached to the surface of PU tensile test specimens by technology of compression molding and the filter is transformed to form of PU adhesive film. The composite can sustain large deformation and the stain can be effectively detected by resistance measurement in real time of deformation. Furthermore, the sensitivity of PU/MWCNT sensoric unit was significantly improved by CNT oxidation by HNO3 acid. This enhancement was quantified by a gauge factor. Its value, for example, increase from 9.5 at tensile strain ~9 % for pure network to 23.1 for network made of oxidized tubes measured at the same strain. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2012
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