Anisotropic piezoresistive response of 3D-printed pressure sensor based on ABS/MWCNT nanocomposite

Nanocomposites based on carbon nanotubes (CNTs) are suitable for sensors, due to matrix ability to incorporate nanotube properties. Thus, we developed a low-cost, nanostructured poly(acrylonitrile-butadiene-styrene) (ABS) polymer piezoresistive sensor produced by additive manufacturing. For this, so...

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Published inScientific reports Vol. 14; no. 1; pp. 25297 - 11
Main Authors Quaresma, Luciano J. B., Oliveira, Dhonata S. C., Dias, Rosielem S., Alves, Kelly C., de Barros, Luiz G. D., Pessin, Gustavo, Sinatora, Amilton, Paraguassu, Waldeci, dos Reis, Marcos A. L.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 25.10.2024
Nature Publishing Group
Nature Portfolio
Subjects
3-D printers
639/301/1005/1009
639/301/930/328/1649
639/301/930/527/1821
639/925/357/73
Acrylonitrile
Additive manufacturing
Anisotropy
Carbon
Carboxylic acids
Dimethylformamide
Electric fields
Electrodes
Electrons
Engineering
Humanities and Social Sciences
Load
multidisciplinary
Nanocomposites
Nanomaterials
Nanotechnology
Nanotubes
Polymers
Pressure sensors
Raman spectroscopy
Scanning electron microscopy
Science
Science (multidisciplinary)
Sensors
Silver
Styrene
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Summary:Nanocomposites based on carbon nanotubes (CNTs) are suitable for sensors, due to matrix ability to incorporate nanotube properties. Thus, we developed a low-cost, nanostructured poly(acrylonitrile-butadiene-styrene) (ABS) polymer piezoresistive sensor produced by additive manufacturing. For this, solution layers of acetone, dimethylformamide and CNTs functionalized with carboxylic acid were pulverized on an ABS substrate using an aerograph. Electrical characterization revealed an anisotropic piezoresistive response of the material, induced by the printing lines direction. Field Emission Gun-Scanning Electron Microscopy showed the nanostructured film spreading after five layers of CNTs as well as the random entanglement of nanotubes on parallel and perpendicular 3D-printed ABS substrates. Raman spectroscopy indicated compression and p-type doping of CNTs in interaction with the polymer, as seen mainly by the blueshift of the G and 2D subbands. The results show that the material is promising for pressure sensors, with potential applications in robotic haptic feedback systems.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-76028-2