Highly Stretchable, Ultra-Soft, and Fast Self-Healable  Conductive Hydrogels Based on Polyaniline Nanoparticlesfor Sensitive Flexible Sensors

Xiaohui Yu; Haopeng Zhang; Yufei WangXiaoshan FanZibiao LiXu ZhangTianxi Liu

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Highly Stretchable, Ultra-Soft, and Fast Self-Healable Conductive Hydrogels Based on Polyaniline Nanoparticlesfor Sensitive Flexible Sensors

机译：Highly Stretchable, Ultra-Soft, and Fast Self-Healable Conductive Hydrogels Based on Polyaniline Nanoparticlesfor Sensitive Flexible Sensors

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Herein, novel conductive composite hydrogels are developed with highstretchability, ultra-softness, excellent conductivity, and good self-healingability. The hydrogels are formed in the water/glycerol binary solventsystem, in which the polyaniline nanoparticles (PANI-NPs) are incorporatedinto the poly(poly(ethylene glycol) methacrylate-co-acrylic acid) (P(PEG-co-AA)) scaffolds via the dynamically electrostatic interactions and hydrogenbonds. The PANI-NPs serve as conductive fillers to assign conductivityto the hydrogel, while the enhanced interfacial interactions between thePANI-NPs and P(PEG-co-AA) matrix endow the hydrogel with high stretchability(>1000%), low modulus (≈6 kPa), excellent elasticity (η = 0.07,energy loss coefficient at 500% strain), and fast self-healing ability (93.3%after 10 mins). Particularly, the desirable anti-freezing property is achievedby introducing a binary solvent system. The composite hydrogel-basedsensors are proposed, with the states-independent properties, low detectionlimit (0.5% strain and 25 Pa), highly linear dependence, and excellentanti-fatigue performance (>1000 cycles). In addition, during the practicalwearable sensing tests, various external stimulus and human motions canbe detected, including speaking, writing, joint movement, or even smallwater droplets, indicating the potential applications for the next generationof epidermal sensors.

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《Advanced functional materials》 |2022年第33期|2204366.1-2204366.11|共11页
作者
Xiaohui Yu; Haopeng Zhang; Yufei WangXiaoshan FanZibiao LiXu ZhangTianxi Liu;
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作者单位

State Key Laboratory for Modification of Chemical Fibers and PolymerMaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620, P. R. China;

Institute of Sustainability for Chemicals, Energy and Environment(ISCE2)A*STAR (Agency for Science, Technology and Research)Singapore 138634, Singapore;

Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Laboratory for Nano Energy CompositesJiangnan UniversityWuxi, Jiangsu 214122, P. R. ChinaState Key Laboratory for Modification of Chemical Fibers and PolymerMaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620, P. R. China;

Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationSchool of Chemi;

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conductive hydrogels; flexible sensors; highly stretchable; polyaniline nanoparticles; self-healable; ultra-soft;

Highly Stretchable, Ultra-Soft, and Fast Self-Healable Conductive Hydrogels Based on Polyaniline Nanoparticlesfor Sensitive Flexible Sensors

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