Abstract
The development of multifunctional gel materials based on fiber is the focus of study. However, creating fiber gel materials with high mechanical properties remains challenging. Inspired by the reinforced concrete structures in construction engineering, we impregnated poly propionamide/polyacrylic acid gel prepolymer solution into the wood by vacuum and polymerized it with wood fiber in situ. The wood fiber gel (WFG) with a dually synergistic network was developed with high tensile strength, high elasticity, and excellent anisotropy. For example, the tensile strength and tensile modulus of WFG reached 7.09 MPa and 59.2 MPa, respectively. Remarkably, its compression elasticity reached 50%. Meanwhile, the ionic conductivity of WFG was 2.75 s/m, which provided more application prospects for self-insulating wood. Additionally, we used WFG to fabricate piezoresistive sensors, that maintained good pressure sensing performance after 1000 pressure responses which provided a possibility for using WFG in the fields of intelligent human–computer interaction sensors.
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Acknowledgments
The authors are grateful for the financial support of a special fund from the Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University (Grant No. 2016HXKFCLXY001).
Funding
Beijing Common Construction Project and Beijing Forestry University, No. 2016HXKFCLXY001, Junwen Pu
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XH: Conceptualization, Methodology, Software, Writing -Original draft. XH: Data curation, Software. ZW: Data curation, Software. SW: Data curation, Software. WM: Visualization, Investigation. HL: Visualization, Investigation. ZZ: Visualization, Investigation. JP: Conceptualization, Writing – review & editing.
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Han, X., Han, X., Wang, Z. et al. High mechanical properties and excellent anisotropy of dually synergistic network wood fiber gel for human–computer interactive sensors. Cellulose 29, 4495–4508 (2022). https://doi.org/10.1007/s10570-022-04554-1
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DOI: https://doi.org/10.1007/s10570-022-04554-1