Poly(methyl methacrylate) and thiophene-coated single-walled carbon nanotubes for volatile organic compound discrimination

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dc.contributor.authorMuangrat, Worawut
dc.contributor.authorChodjarusawad, Thanawee
dc.contributor.authorMaolanon, Rungroj
dc.contributor.authorPratontep, Sirapat
dc.contributor.authorPorntheeraphat, Supanit
dc.contributor.authorWongwiriyapan, Winadda
dc.date.accessioned2026-08-06T10:13:27Z
dc.date.available2026-08-06T10:13:27Z
dc.date.issued2016-02-01
dc.description.abstractPoly(methyl methacrylate) (PMMA) and thiophene-coated single-walled carbon nanotubes (SWNTs) were fabricated for use in volatile organic compound (VOC) detection. Pristine SWNTs were separately coated with PMMA (PMMA/SWNTs) and thiophene (thiophene/SWNTs) by spincoating. Pristine SWNTs showed the highest response to methanol, while PMMA/SWNTs enabled 5.4-fold improved dichloromethane detection and thiophene/SWNTs enabled 1.4-fold improved acetone detection compared with pristine SWNTs. The sensor response of PMMA/SWNTs to dichloromethane and that of thiophene/SWNTs to acetone can be attributed to the Hildebrand solubility parameter (HSP). The more similar the HSP, the higher the sensor response. The sensor response of pristine SWNTs to methanol is related to the diffusion coefficient and molecular size. The relationships between the vapor concentration and sensor response of PMMA/SWNTs to dichloromethane and thiophene/SWNTs to acetone are based on Henry's adsorption isotherm, while that of pristine SWNTs to methanol is based on the Henry-clustering model. Principal component analysis (PCA) results show that dichloromethane, acetone, and methanol were successfully discriminated.
dc.identifier.citationJapanese Journal of Applied Physics, 55(2), 2016
dc.identifier.doi10.7567/JJAP.55.02BD04
dc.identifier.issn00214922
dc.identifier.other2-s2.0-84956670780
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/6766
dc.sourceJapanese Journal of Applied Physics
dc.titlePoly(methyl methacrylate) and thiophene-coated single-walled carbon nanotubes for volatile organic compound discrimination
dc.typeArticle

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