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Double-network hydrogels with adjustable surface morphology and multifunctional integration for flexible strain
Yang Yu1, Fengjin Xie1, Xinpei Gao1
1Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, People's Republic of China. lqzheng@sdu.edu.cn gaoxinpei@mail.sdu.edu.cn.
Soft Matter
|April 28, 2021
Summary
Researchers developed a new multifunctional double-network (DN) hydrogel using a poly(ionic liquid) and κ-carrageenan. This advanced ionic conductive hydrogel shows promise for wearable sensors and flexible electronics.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biomedical Engineering
Background:
- High-performance flexible electronics require advanced ionic conductive hydrogels.
- Double-network (DN) hydrogels offer excellent mechanical properties but face challenges in surface control and multifunctionality.
Purpose of the Study:
- To fabricate a multifunctional DN hydrogel with controllable surface morphology and integrated functions.
- To explore the potential of this novel hydrogel for wearable strain sensors.
Main Methods:
- Synthesized a DN hydrogel via multiple cross-linking of a K+-containing poly(ionic liquid) (PIL) and κ-carrageenan.
- Investigated the hydrogel's physicochemical properties, including mechanical strength, machinability, surface morphology, and adhesion.
Main Results:
- The resulting DN hydrogel exhibited remarkable mechanical properties, machinability, adjustable surface morphology, and superior adhesion.
- Demonstrated excellent performance as a wearable strain sensor for real-time human health monitoring.
Conclusions:
- The developed multifunctional DN hydrogel meets the demands for next-generation flexible electronics.
- This design strategy enables the creation of multiscale structured, multifunctional ionic conductive hydrogels for advanced applications.
