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Authors: Jiao, Dejin
Lossada, Francisco
Guo, Jiaqi
Skarsetz, Oliver
Heonders, Daniel
Liu, Jin
Walther, Andreas
Title: Electrical switching of high-performance bioinspired nanocellulose nanocomposites
Online publication date: 13-Sep-2021
Year of first publication: 2021
Language: english
Abstract: Nature fascinates with living organisms showing mechanically adaptive behavior. In contrast to gels or elastomers, it is profoundly challenging to switch mechanical properties in stiff bioinspired nanocomposites as they contain high fractions of immobile reinforcements. Here, we introduce facile electrical switching to the field of bioinspired nanocomposites, and show how the mechanical properties adapt to low direct current (DC). This is realized for renewable cellulose nanofibrils/polymer nanopapers with tailor-made interactions by deposition of thin single-walled carbon nanotube electrode layers for Joule heating. Application of DC at specific voltages translates into significant electrothermal softening via dynamization and breakage of the thermo-reversible supramolecular bonds. The altered mechanical properties are reversibly switchable in power on/power off cycles. Furthermore, we showcase electricity-adaptive patterns and reconfiguration of deformation patterns using electrode patterning techniques. The simple and generic approach opens avenues for bioinspired nanocomposites for facile application in adaptive damping and structural materials, and soft robotics.
DDC: 500 Naturwissenschaften
500 Natural sciences and mathematics
540 Chemie
540 Chemistry and allied sciences
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 09 Chemie, Pharmazie u. Geowissensch.
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: CC BY
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Journal: Nature Communications
Pages or article number: 1312
Publisher: Nature Publishing Group UK
Publisher place: London
Issue date: 2021
ISSN: 2041-1723
Publisher URL:
Publisher DOI: 10.1038/s41467-021-21599-1
Appears in collections:JGU-Publikationen

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