Browsing by Author "Sayago, I."
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Item New sensitive layers for surface acoustic wave gas sensors based on polymer and carbon nanotube composites(2012-12) Sayago, I.; Fernández, M. J.; Fontecha, J. L.; Horrillo, M. C.; Vera, C.; Obieta, I.; Bustero, I.; Biomateriales; Tecnalia Research & Innovation; PRINTEXSurface acoustic wave (SAW) gas sensors based on polymers and carbon nanotube composites as sensitive layers were investigated for the detection of low concentrations of volatile organic compounds as octane and toluene. Several nanocomposites based on polyepichlorohydrin (PECH) and polyetherurethane (PEUT) with different percentage of multiwalled carbon nanotubes (MWCNT) were tested to study the effect of MWCNTs in the response of sensors. The sensors exhibited at room temperature high response to volatile gases (toluene and octane) but did not detect other gases tested as H2, NH3, NO2 and CO.Item New sensitive layers for surface acoustic wave gas sensors based on polymer and carbon nanotube composites(2011) Sayago, I.; Fernández, M. J.; Fontecha, J. L.; Horrillo, M. C.; Vera, C.; Obieta, I.; Bustero, I.; Biomateriales; Tecnalia Research & Innovation; PRINTEXSurface acoustic wave (SAW) gas sensors based on carbon nanotube polymer composites as sensitive layers were investigated for the detection of low concentrations of volatile organic compounds as octane and toluene. Several nanocomposites based on polyepichlorohydrin (PECH) and polyetherurethane (PEUT) with different percentage of multiwalled carbon nanotubes (MWCNT) were tested to study the effect of MWCNTs in the response of sensors.Item Surface acoustic wave gas sensors based on polyisobutylene and carbon nanotube composites(2011-08-10) Sayago, I.; Fernández, M. J.; Fontecha, J. L.; Horrillo, M. C.; Vera, C.; Obieta, I.; Bustero, I.; Biomateriales; Tecnalia Research & Innovation; PRINTEXSurface acoustic wave (SAW) gas sensors based on polyisobutylene (PIB) and composites (PIB and carbon nanotubes) as sensitive layers were investigated for the detection of octane and toluene (volatile organic compounds) and other atmospheric pollutants (H2, CO, NO2 and NH3) at room temperature. In order to study the effect of nanotubes in the response of SAW sensors, several composites based on PIB with different percentages of multiwalled carbon nanotubes (MWNTs) were tested and compared to the response obtained from PIB SAW sensors. Sensors exhibit high responses and selectivity to volatile organic compounds (VOCs) with fast response and recovery times as well as good repeatability and reproducibility. Experimental results show as small percentages of nanotubes improve the response to octane.