Polymer-coated single-walled carbon nanotubes for ethanol and dichloromethane discrimination

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dc.contributor.authorMuangrat, Worawut
dc.contributor.authorMaolanon, Rungroj
dc.contributor.authorPratontep, Sirapat
dc.contributor.authorPorntheeraphat, Supanit
dc.contributor.authorWongwiriyapan, Winadda
dc.date.accessioned2026-08-06T10:07:33Z
dc.date.available2026-08-06T10:07:33Z
dc.date.issued2013-10-29
dc.description.abstractSensor response and pattern recognition of polymer-coated single-walled carbon nanotubes (SWNTs) were investigated. Printed circuit board (PCB) with Cu/Au interdigitated electrode was used as sensor platform. SWNTs network was firstly formed on PCB by drop-casting. For polymer-coated SWNTs preparation, poly(methyl methacrylate) (PMMA) and thiophene were employed as polymers to coat on SWNTs by spin coating; PMMA/SWNTs and thiophene/SWNTs. Raman spectra showed no obvious structure changes of SWNTs after polymer coating. Next, gas sensing test was conducted. Pristine SWNTs, PMMA/SWNTs and thiophene/SWNTs were exposed to vapors of ethanol and dichloromethane at room temperature. From normalized sensor response results, it was found that pristine SWNTs and PMMA/SWNTs showed the highest response to ethanol and dichloromethane vapors, respectively. In order to discriminate vapors between ethanol and dichloromethane, pattern recognition technique was utilized. Principal component analysis (PCA) results showed that pattern recognition of ethanol and dichloromethane vapors can be discriminated by using pristine SWNTs and polymer-coated SWNTs sensors. © (2013) Trans Tech Publications, Switzerland.
dc.identifier.citationAdvanced Materials Research, 802, 267-272, 2013
dc.identifier.doi10.4028/www.scientific.net/AMR.802.267
dc.identifier.issn10226680
dc.identifier.other2-s2.0-84886245445
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/5125
dc.sourceAdvanced Materials Research
dc.subjectDichloromethane
dc.subjectDiscrimination
dc.subjectEthanol
dc.subjectPattern recognition
dc.subjectPoly(methyl methacrylate)
dc.subjectPrincipal component analysis
dc.subjectSingle-walled carbon nanotubes
dc.subjectThiophene
dc.titlePolymer-coated single-walled carbon nanotubes for ethanol and dichloromethane discrimination
dc.typeConference Paper

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