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Conductive hybrid filaments of carbon nanotubes, chitin nanocrystals and cellulose nanofibers formed by interfacial nanoparticle complexation

Zhang, Kaitao; Ketterle, Lukas 1,2; Järvinen, Topias; Hong, Shu; Liimatainen, Henrikki
1 Fakultät für Chemieingenieurwesen und Verfahrenstechnik (CIW), Karlsruher Institut für Technologie (KIT)
2 Institut für Mechanische Verfahrenstechnik und Mechanik (MVM), Karlsruher Institut für Technologie (KIT)


In this paper, anionic TEMPO-oxidized cellulose nanofibers (TO-CNFs) and cationic, partially deacetylated, chitin nanocrystals (ChNCs) were used to fabricate continuous composite filaments (TO-CNF/ChNC filament) with a straightforward and sustainable aqueous process based on the interfacial nanoparticle complexation (INC) of oppositely charged nano-constituents. In particular, the role of TO-CNF and ChNC concentrations in filament drawing and the effect of drawing speed on the mechanical properties of composite filaments were investigated. Moreover, conductive filaments were fabricated by mixing single walled carbon nanotubes (SWCNTs) with TO-CNF dispersion and further complexing with the ChNC aqueous suspension. A conductive filament with an electrical conductivity of 2056 S/m was obtained. However, the increase in the SWCNTs content reduced the mechanical properties of the formed filament compared to neat TO-CNF/ChNC filament. This study not only introduces a new nanoparticle candidate to prepare filaments based on INC method but also provides potential advanced and alternative green filament to be used as wearable electronics in biomedical area.

Verlagsausgabe §
DOI: 10.5445/IR/1000130105
Veröffentlicht am 26.02.2021
DOI: 10.1016/j.matdes.2020.108594
Zitationen: 15
Web of Science
Zitationen: 12
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 06.2020
Sprache Englisch
Identifikator ISSN: 0264-1275
KITopen-ID: 1000130105
Erschienen in Materials and design
Verlag Elsevier
Band 191
Seiten Art.-Nr.: 108594
Schlagwörter Nanocellulose; Nanochitin; Filament; Carbon nanotube; Cellulose nanofibrils; Complexation
Nachgewiesen in Dimensions
Web of Science
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