Publication
Boosting through-plane electrical conductivity: chitosan composite films with carbon-sepiolite and multiwalled carbon nanotubes
| dc.contributor.author | Barra, Ana | |
| dc.contributor.author | Ferreira, Nuno M. | |
| dc.contributor.author | Pocas, Fátima | |
| dc.contributor.author | Ruiz-Hitzky, Eduardo | |
| dc.contributor.author | Nunes, Cláudia | |
| dc.contributor.author | Ferreira, Paula | |
| dc.date.accessioned | 2024-11-04T16:42:55Z | |
| dc.date.available | 2024-11-04T16:42:55Z | |
| dc.date.issued | 2025-01 | |
| dc.description.abstract | Flexible and electrically conductive materials are gaining significant attention across various domains, notably in electronics, biomedicine and food industry. One promising strategy involves the integration of electrically conductive nanostructures into a polymeric matrix to fabricate composite materials. However, achieving uniform through-plane electrical conductivity remains a challenge due to the preferential alignment of carbon nanostructures in the in-plane direction. Herein, we report the development of electrically conductive chitosan (CS)- based biocomposite films incorporating a multicomponent filler system. By combining carbon supported on sepiolite clay (CARSEP) with multiwalled carbon nanotubes (MWCNT), it is aimed to facilitate an interconnected distribution in both in-plane and through-plane directions. The optimized film, featuring a CS/CARSEP/MWCNT mass ratio of 50/40/10, exhibited a maximum electrical conductivity of 55.5 S/m and 0.1 S/m in the in-plane and through-plane directions, respectively. Additionally, migration studies demonstrated the absence of harmful compounds upon heating the film up to 60 ◦C in air, ethanol, or hexane. These findings highlight the potential of these flexible and electrically conductive biocomposite films, primarily composed of biobased materials, for applications requiring through-plane electrical conductivity. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.doi | 10.1016/j.carbon.2024.119691 | pt_PT |
| dc.identifier.eid | 85206123829 | |
| dc.identifier.issn | 0008-6223 | |
| dc.identifier.uri | http://hdl.handle.net/10400.14/47106 | |
| dc.identifier.wos | 001334592900001 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Biocomposite films | pt_PT |
| dc.subject | Carbon-sepiolite | pt_PT |
| dc.subject | Chitosan | pt_PT |
| dc.subject | Electrical conductivity | pt_PT |
| dc.subject | Multiwalled carbon nanotubes | pt_PT |
| dc.title | Boosting through-plane electrical conductivity: chitosan composite films with carbon-sepiolite and multiwalled carbon nanotubes | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.title | Carbon | pt_PT |
| oaire.citation.volume | 231 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |