Ultra-strong, nonfreezing, and flexible strain sensors enabled by biomass-based hydrogels through triple dynamic bond design

Fu, Haocheng; Wang, Bin; Li, Jinpeng; Cao, Daxian; Zhang, Wei; Xu, Jun; Li, Jun; Zeng, Jinsong; Gao, Wenhua; Chen, Kefu

doi:10.1039/d3mh02008h

Mater. Horiz.

2024

DOI: 10.1039/d3mh02008h

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Ultra-strong, nonfreezing, and flexible strain sensors enabled by biomass-based hydrogels through triple dynamic bond design

Haocheng Fu,

Bin Wang,

Jinpeng Li

et al.

Abstract: By introducing the triple dynamic bonds to a double network (DN) structure, the preparation of biodegradable flexible strain sensors with ultra-strong and nonfreezing properties was achieved.

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Cited by 8 publications

References 49 publications

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Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion

Shi,

Huo,

Yang

et al. 2024

Adv Funct Materials

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Cellulose consists of a natural, rigid polymer that is widely used to improve the mechanical and water‐holding properties of hydrogels. However, its abundant hydroxyl groups make it highly absorbent to free water, leading to swelling behavior. This increased free water content will also decrease mechanical and adhesive performance. In this study, cellulose is successfully hydrophobically modified to reduce its absorption of free water. Gelatin is then cross‐linked with cellulose through a Schiff‐base reaction, resulting in increased bound water content. This significantly enhances resistance to swelling and permeability, and improves the freeze–thaw stability of the hydrogel. Due to its internal hydrophobicity, water molecules can quickly penetrate into the interior, reducing their residence time on the hydrogel surface. This allows the hydrogel to maintain high adhesion in natural environments, achieving an adhesion strength of up to 3.0 MPa on wood and bamboo‐based materials. The hydrogel can retain its adhesive properties even after prolonged exposure to a humid environment. Additionally, Na+ ions enhance the electrical conductivity and sensitivity of the hydrogel (gauge factor (GF) = 1.51), demonstrating its potential applications in flexible sensing.

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Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion

Shi,

Huo,

Yang

et al. 2024

Adv Funct Materials

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A gelatin-based ionic conductor with a dense/loose alternating network enabled by surface active cellulose

Fu,

Wang,

et al. 2024

Chemical Engineering Journal

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Applied research and recent advances in the development of flexible sensing hydrogels from cellulose: A review

Liu,

Lv,

et al. 2024

International Journal of Biological Macromolecules

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Ultra-strong, nonfreezing, and flexible strain sensors enabled by biomass-based hydrogels through triple dynamic bond design

Abstract: By introducing the triple dynamic bonds to a double network (DN) structure, the preparation of biodegradable flexible strain sensors with ultra-strong and nonfreezing properties was achieved.

Cited by 8 publications

References 49 publications

Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion

Cellulose‐Based Dual‐Network Conductive Hydrogel with Exceptional Adhesion

A gelatin-based ionic conductor with a dense/loose alternating network enabled by surface active cellulose

Applied research and recent advances in the development of flexible sensing hydrogels from cellulose: A review

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