Journal article
Wood Cell Wall Nanoengineering toward Anisotropic, Strong, and Flexible Cellulosic Hydrogel Sensors
Nano Letters, Vol.24(41), pp.12741-12749
2024
PMID: 39373896
Abstract
Achieving highly ionic conductive hydrogels from natural wood remains challenging owing to their insufficient surface area and low number of active sites on the cell wall. This study proposes a viable strategy to design a strong and anisotropic wood-based hydrogel through cell wall nanoengineering. By manipulating the microstructure of the wood cell wall, a flexible cellulosic hydrogel is achieved through Schiff base bonding via the polyacrylamide and cellulose molecular chains. This results in excellent flexibility and mechanical properties of the wood hydrogel with tensile strengths of 22.3 and 6.1 MPa in the longitudinal and transverse directions, respectively. Moreover, confining aqueous salt electrolytes within the porous structure gives anisotropic ionic conductivities (19.5 and 6.02 S/m in the longitudinal and transverse directions, respectively). The wood-based hydrogel sensor has a favorable sensitivity and a stable working performance at a low temperature of -25 °C in monitoring human motions, thereby demonstrating great potential applications in wearable sensor devices.
Details
- Title
- Wood Cell Wall Nanoengineering toward Anisotropic, Strong, and Flexible Cellulosic Hydrogel Sensors
- Authors
- Shuang Liang - Nanjing Forestry UniversityQiuling Ji - Nanjing Forestry UniversityRui Wang - Nanjing Forestry UniversityGangzheng Hu - Nanjing Forestry UniversityWenxuan Li - Nanjing Forestry UniversityLei He - Jiangxi Academy of ForestryYue Jiao - Nanjing Forestry UniversityTripti Singh (Author) - University of the Sunshine Coast, Queensland, National Centre for Timber Durability and Design LifeHongfei Zhu - Nanjing Forestry UniversityKaiyin Wang - Nanjing Forestry UniversityQiliang Fu (Corresponding Author) - ScionWen He (Corresponding Author) - Nanjing Forestry University
- Publication details
- Nano Letters, Vol.24(41), pp.12741-12749
- Publisher
- American Chemical Society
- Date published
- 2024
- DOI
- 10.1021/acs.nanolett.4c02223
- ISSN
- 1530-6992
- PMID
- 39373896
- Grant note
- This work was supported by the National Key R&D Program of China (no. 2023YFD2201405) and the Jiangsu Agricultural Science and Technology Innovation Fund (no. CX(23)3057).
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 991066166002621
- Output Type
- Journal article
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