Gnonhoue, George, David, Éric, Voix, Jérémie and Tabiai, Ilyass.
2026.
« Hybrid flexible dry electrodes for electroencephalography: Electrical and thermo-mechanical properties ».
Journal of Applied Polymer Science, vol. 143, nº 8.
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Abstract
This study evaluates styrene–ethylene–butylene–styrene (SEBS) composites modified with carbon nanotubes (CNTs) and carbon black (CB) for flexible electroencephalography (EEG) electrodes. Maleic anhydride-grafted SEBS (SEBS-MA) with 8 wt% CNTs and 2 wt% CB provides an optimal balance of conductivity and flexibility, a storage modulus comparable to SEBS, and yields a highly flexible conductive material. SEBS and SEBS-MA composites with 8 wt% CNT/2 wt% CB produced stable, low-noise signals, suggesting responsiveness to brain activity. The contact impedance of the elastomeric thermoplastic polymer (SEBS)/8 wt% CNT/2 wt% CB electrode is 4.25 ± 0.5 kΩ, and 4.5 ± 0.6 kΩ for SEBS-MA/8 wt% CNT/2 wt% CB, comparable to a commercial electrode (4.75 ± 1.5 kΩ). SEBS/8 wt% CNT/2 wt% CB and SEBS-MA/8 wt% CNT/2 wt% CB produced stable, low-noise EEG signals. In vivo EEG recordings demonstrated that SEBS-MA with 8 wt% CNT/2 wt% CB effectively captured transitions between the eyes-open and eyes-closed states, yielding clear and stable signals. These findings suggest that SEBS-MA/8 wt% CNT/2 wt% CB is a promising material for flexible, high-performance EEG electrodes due to its balance of electrical conductivity, mechanical stability, and signal clarity.
| Item Type: | Peer reviewed article published in a journal |
|---|---|
| Professor: | Professor David, Éric Voix, Jérémie Tabiai, Ilyass |
| Affiliation: | Génie mécanique, Génie mécanique, Génie mécanique |
| Date Deposited: | 17 Dec 2025 15:24 |
| Last Modified: | 28 Jan 2026 17:14 |
| URI: | https://espace2.etsmtl.ca/id/eprint/33127 |
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