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Abstract
Liquid metal (LM) nanodroplets and MXene nanosheets are integrated with sulfonated bacterial nanocellulose (BNC) and acrylic acid (AA). Upon fast sonication, AA polymerization leads to a crosslinked composite hydrogel in which BNC exfoliates Mxene, forming organized conductive pathways. Soft conducting properties are achieved in the presence of colloidally stable core-shell LM nanodroplets. Due to the unique gelation mechanism and the effect of Mxene, the hydrogels spontaneously undergo surface wrinkling, which improves their electrical sensitivity (GF = 8.09). The hydrogels are further shown to display interfacial adhesion to a variety of surfaces, ultra-elasticity (tailorable elongation, from 1000 % to 3200 %), indentation resistance and self-healing capabilities. Such properties are demonstrated in wearable, force mapping, multi-sensing and patternable electroluminescence devices.
| Original language | English |
|---|---|
| Article number | 120330 |
| Journal | Carbohydrate Polymers |
| Volume | 301 |
| Early online date | 15 Nov 2022 |
| DOIs | |
| Publication status | Published - 1 Feb 2023 |
| MoE publication type | A1 Journal article-refereed |
Funding
The authors are grateful for the financial support for this work by Guangdong Province Science Foundation ( 2017GC010429 ) and Science and Technology Program of Guangzhou ( 202002030329 ). M.W., O.J.R, L.N., X.N. and X.S. gratefully acknowledge the Canada Excellence Research Chair Program ( CERC-2018-00006 ), Canada Foundation for Innovation (Project number 38623 ) and ">H2020-ERC-2017-Advanced Grant ‘BioELCell’ ( 788489 ).
Keywords
- Bacterial nanocellulose
- Electroactive hydrogels
- Force mapping
- Liquid metals
- Self-healing
- TiCT MXene
Fingerprint
Dive into the research topics of 'Liquid metal and Mxene enable self-healing soft electronics based on double networks of bacterial cellulose hydrogels'. Together they form a unique fingerprint.Projects
- 1 Finished
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BioELCell: Bioproducts Engineered from Lignocelluloses: from plants and upcycling to next generation materials
Rojas, O. (Principal investigator), Ressouche, E. (Project Member), Ajdary, R. (Project Member), Johansson, L.-S. (Project Member), Usai, L. (Project Member), Abidnejad, R. (Project Member), Tardy, B. (Project Member), Zhao, B. (Project Member), Greca, L. (Project Member), Bhattarai, M. (Project Member), Meng, Y. (Project Member), Majoinen, J. (Project Member), Zhu, Y. (Project Member), Klockars, K. (Project Member), Robertson, D. (Project Member), Reyes Torres, G. (Project Member), Kämäräinen, T. (Project Member), Dufau Mattos, B. (Project Member) & Zanjanizadeh Ezazi, N. (Project Member)
30/07/2018 → 31/07/2023
Project: EU: ERC grants
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