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Updated: Nov 2, 2025
3D Printed Porous Cellulose Nanocomposite Hydrogel Scaffolds
Published on: April 24, 2019
A multifunctional nanocellulose-based hydrogel for strain sensing and self-powering applications
Baobin Wang1, Lin Dai2, Lauren Alyssa Hunter3
1Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada; State Key Laboratory of Biobased Material and Green Papermaking, Key Lab of Paper Science and Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, People's Republic of China.
Researchers developed a highly stretchable and tough ionic conductive hydrogel using cationic nanocellulose and graphitic carbon nitride. This advanced material enables sensitive detection of human motion and powers wearable devices, showcasing potential in self-powered electronics.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Ionic conductive hydrogels are crucial for advanced applications like electronic skin and wearable sensors.
- Developing hydrogels with enhanced stretchability, toughness, and conductivity remains a key challenge.
Purpose of the Study:
- To create a multifunctional ionic conductive hydrogel with superior mechanical properties and sensing capabilities.
- To explore the use of cationic nanocellulose (CCNC) and graphitic carbon nitride (g-C3N4) for hydrogel fabrication.
Main Methods:
- CCNC was used to stabilize g-C3N4, forming CCNC-g-C3N4 complexes.
- In situ radical polymerization was employed to synthesize the hydrogel.
- The hydrogel's mechanical properties, ionic conductivity, and sensing performance were evaluated.
Main Results:
- The synthesized hydrogel exhibited remarkable stretchability (up to 2800% strain) and toughness.
- The hydrogel demonstrated high sensitivity in detecting human body motion, speech, and exhalation (gauge factor ≈ 5.6 at 0-1.6% strain).
- A self-powered device based on the hydrogel could charge a capacitor (2.2 μF) to 15 V using human motion.
Conclusions:
- The developed CCNC-g-C3N4 hydrogel offers a promising platform for multifunctional applications.
- Its high stretchability, toughness, and sensing capabilities make it suitable for self-powered wearable electronics.
- This research advances the development of next-generation smart materials for human-interactive devices.
