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Biobased antifatigue organohydrogel with superior ionic conductivity enabled by lignin nanostructures
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DOI：10.1039/D6GC02024K.png)
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Abstract
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Organogels that exhibit efficient mechanical energy dissipation; high mechanical robustness; long-term durability; and outstanding ionic conductivity are promising for flexible electronic devices; yet integrating these attributes into a single material remains an outstanding challenge. Here; we present a biobased double-network organohydrogel synthesized via mild; catalyst-free crosslinking of lignin acetoacetate (LA) in Cyrene-water solvent mixture. The crosslinked LA network serves as the primary reinforcing component; generating a mesoporous structure that simultaneously enables efficient deformation; energy dissipation; and ionic conductivity. This architecture endows the organohydrogel with exceptional mechanical strength; antifatigue under repeated loading; and stable damping capacity at broad temperature and frequency range. As a resistive compression-type sensor; the organohydrogel responds to varying strain levels with consistent and reliable sensitivity. Overall; this family of biobased organohydrogels surpasses fossil-based counterparts and offer strong potential for next-generation flexible electronics.
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