Deep eutectic hydrogel with polyphenol metal coordination and size reduced cellulose for high performance strain sensing

IF 13.2 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2026-05-01 Epub Date: 2026-01-22 DOI:10.1016/j.carbpol.2026.124998

Kunpeng Qian , Yu Sun , Wenya Ma , Xuliang Wang , Huanhuan Liu , Yijie Li , Li Li

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Abstract

Deep eutectic solvent (DES)-based hydrogels are environmentally friendly and structurally tunable, yet their applications are often limited by poor conductivity, weak resilience and rigidity. Herein, a multifunctional hydrogel (DC-TAZn) was developed by reinforcing a choline chloride-polyacrylic acid (ChCl-PAA) matrix with size-reduced cellulose nanofibers (CNF) and dynamic tannic acid-Zn²⁺ coordination. The hydrogel exhibits high ionic conductivity (0.34 S/m), excellent stretchability (up to 807%), remarkable resilience (>99.89%), and a reliable gauge factor (1.99) for strain sensing. Additionally, DC-TAZn hydrogel shows strong adhesion, self-healing ability and antibacterial activity, while maintaining functionality under extreme conditions. This multi-synergistic hydrogel provides a sustainable strategy for designing next-generation smart hydrogels with integrated mechanical, conductive, and sensing functionalities, advancing applications in wearable electronics and intelligent human-machine interfaces.

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深共晶水凝胶与多酚金属配位和尺寸减小纤维素高性能应变传感

深度共晶溶剂（DES）为基础的水凝胶具有环保和结构可调的特点，但其应用往往受到导电性差、回弹性弱和刚性差的限制。本文通过还原纤维素纳米纤维（CNF）和动态单宁酸- zn2 +配位增强氯化胆碱-聚丙烯酸（ChCl-PAA）基质，制备了一种多功能水凝胶（DC-TAZn）。该水凝胶具有高离子电导率（0.34 S/m）、优异的拉伸性（高达807%）、卓越的回弹性（>99.89%）和可靠的应变传感测量因子（1.99）。此外，DC-TAZn水凝胶具有很强的粘附力、自愈能力和抗菌活性，在极端条件下也能保持功能。这种多协同水凝胶为设计具有综合机械、导电和传感功能的下一代智能水凝胶提供了可持续的策略，推动了可穿戴电子产品和智能人机界面的应用。

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.