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Updated: Aug 14, 2026
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Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation
Published on: June 17, 2014
Biomass-based multifunctional hydrogel fabricated using lignin-Li+ self-catalytic system with high mechanical
Chaofan He1, Ze Kang1, Kai Kang1
1College of Materials and Chemistry, Anhui Agricultural University, Hefei, 230036, China; Anhui Healthy Sleep Home Furnishings Engineering Research Center, Hefei, 230036, China.
Carbohydrate Polymers
|August 12, 2026
Summary
This study developed a strong, conductive hydrogel from bamboo cellulose nanofibers and lignin. The resulting polyacrylamide-lignin/LiCl-BF hydrogel offers excellent mechanical properties, conductivity, and sensing capabilities for applications like posture monitoring.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Polymer Chemistry
Background:
- Conductive hydrogels from natural biomass show promise for flexible electronics.
- Challenges exist in simultaneously achieving high mechanical strength, conductivity, and multifunctionality.
Purpose of the Study:
- To develop a facile strategy for creating a multifunctional polyacrylamide-lignin/LiCl-bamboo cellulose nanofiber (PAM-LLi-BF) hydrogel.
- To enhance mechanical strength, electrical conductivity, and integrate sensing capabilities.
Main Methods:
- Utilized hydrated multi-carboxylic acid deep eutectic solvent for bamboo cellulose nanofiber (BF) dispersion.
- Employed free radical polymerization with an LLi catalytic system to synthesize the PAM-LLi-BF hydrogel.
- Fabricated a hydrogel-based flexible sensor for strain and pressure detection.
Main Results:
- The PAM-LLi-BF hydrogel demonstrated high compressive strength (615.27 kPa), tensile strain (1260.67%), and fatigue resistance.
- Achieved excellent conductivity, adhesion, and antifreezing properties.
- The sensor exhibited a gauge factor of 3.89 for strain sensing and a response time of 231 ms for pressure sensing, with stable performance after 1000 cycles.
Conclusions:
- The developed PAM-LLi-BF hydrogel offers a promising platform for advanced flexible electronic devices.
- Integration with deep learning enabled real-time human sitting posture monitoring with 95.1% accuracy in an intelligent seat cushion.
