Electro-mechanical properties of polyurethane composite with carbon nanotubes network oxidized by KMnO.sub.4./sub. and O.sub.2./sub. RF plasma

0420930 - ÚH 2014 RIV FI eng A - Abstract
Olejník, R. - Slobodian, P. - Říha, Pavel - Cvelbar, U. - Sáha, P.
Electro-mechanical properties of polyurethane composite with carbon nanotubes network oxidized by KMnO₄ and O₂ RF plasma.
NT13: The Fourteenth International Conference on the Science and Application of Nanotubes. Aalto: Aalto University School of Science, 2013. s. 102.
[NT13: The Fourteenth International Conference on the Science and Application of Nanotubes. 24.06.2013-28.06.2013, Aalto]
Grant - others:UTB Zlín(CZ) IGA/FT/2012/022; GA MŠk(CZ) ED2.1.00/03.0111
Institutional research plan: CEZ:AV0Z20600510
Institutional support: RVO:67985874
Keywords : polyurethanes * carbon nanotubes networks * electrical resistance measurements
Subject RIV: BK - Fluid Dynamics
http://nt13.aalto.fi/abstracts/posters/13012Abstract00542.pdf

The effect of functionalization of multi-walled carbon nanotubes using KMnO₄ oxidation and oxygen plasma treatment on the electrical resistance of nanotube network/polyurethane composite subjected to elongation has been studied. The layered composite is prepared by taking a non-woven polyurethane filtering membrane which is made by electrospinning, enmeshing it with carbon nanotubes and melding them into one. The testing has shown tenfold composite resistance increase for the composite prepared from KMnO₄ oxidized nanotubes in comparison to the network prepared from pristine nanotubes. The evaluated sensitivity of the treated composite in terms of the gauge factor increases linearly with strain from values around 5 at the start of deformation to nearly 45 at the strain 12 %. This is a substantial increase, which put the composite prepared from KMnO₄ oxidized nanotubes among ranges the materials and strain gauges with the highest sensitivity of electrical resistance measurement.
Permanent Link: http://hdl.handle.net/11104/0230664