Please use this identifier to cite or link to this item: https://doi.org/10.1002/adfm.202203610
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dc.titleStrong and Tough Conductive Organo-Hydrogels via Freeze-Casting Assisted Solution Substitution
dc.contributor.authorDong, X
dc.contributor.authorGuo, X
dc.contributor.authorLiu, Q
dc.contributor.authorZhao, Y
dc.contributor.authorQi, H
dc.contributor.authorZhai, W
dc.date.accessioned2023-07-24T00:35:10Z
dc.date.available2023-07-24T00:35:10Z
dc.date.issued2022-08-01
dc.identifier.citationDong, X, Guo, X, Liu, Q, Zhao, Y, Qi, H, Zhai, W (2022-08-01). Strong and Tough Conductive Organo-Hydrogels via Freeze-Casting Assisted Solution Substitution. Advanced Functional Materials 32 (31) : 2203610-2203610. ScholarBank@NUS Repository. https://doi.org/10.1002/adfm.202203610
dc.identifier.issn1616-301X,1616-3028
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/243337
dc.description.abstractHigh strength, toughness, and conductivity are among the most sought-after properties of flexible electronics. However, existing engineering materials find it difficult to achieve both excellent mechanical properties and high conductivity. To address this challenge, this study proposes a facile yet versatile strategy for preparing super-tough conductive organo-hydrogels via freeze-casting assisted solution substitution (FASS). This FASS strategy enables the formation of organo-hydrogels in one step with exquisite hierarchical anisotropic structures coupled with synergistic strengthening and toughening effects across multiple length scales. As an exemplary material, the prepared polyvinyl alcohol (PVA) organo-hydrogel with solvent content up to 87 wt% exhibits a combination of high strength (6.5 MPa), high stretchability (1710% in strain), ultra-high toughness (58.9 MJ m−3), as well as high ionic conductivity up to 6.5 S m−1 with excellent strain sensitivity. The exceptional combination of mechanical properties and conductivity makes the PVA organo-hydrogel a promising flexible electronics material. In addition, the FASS strategy can also endow hydrogels with multi-functions, including thermo-healability, freezing tolerance and shape recoverability, and can be applied to various hydrogel materials, such as carboxymethyl cellulose, sodium alginate, and chitosan. Hence, this work provides an all-around solution for preparing advanced strong and tough conductive soft materials for a multitude of applications.
dc.publisherWiley
dc.sourceElements
dc.typeArticle
dc.date.updated2023-07-21T05:45:27Z
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1002/adfm.202203610
dc.description.sourcetitleAdvanced Functional Materials
dc.description.volume32
dc.description.issue31
dc.description.page2203610-2203610
dc.published.statePublished
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