Super Stretchable, Self-Healing, Adhesive Ionic Conductive Hydrogels Based on Tailor-Made Ionic Liquid for High-Performance Strain Sensors

Xue Yao; Sufeng Zhang; Liwei QianNing WeiValentin NicaSergiu CoseriFei Han

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Super Stretchable, Self-Healing, Adhesive Ionic Conductive Hydrogels Based on Tailor-Made Ionic Liquid for High-Performance Strain Sensors

机译：Super Stretchable, Self-Healing, Adhesive Ionic Conductive Hydrogels Based on Tailor-Made Ionic Liquid for High-Performance Strain Sensors

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Ionic conductive hydrogels (ICHs) integrate the conductive performanceand soft nature of tissue-like materials to imitate the features of human skinwith mechanical and sensory traits; thus, they are considered promisingsubstitutes for conventional rigid metallic conductors when fabricatinghuman-motion sensors. However, the simultaneous incorporation of excellentstretchability, toughness, ionic conductivity, self-healing, and adhesion viaa simple method remains a grand challenge. Herein, a novel ICH platformis proposed by designing a phenylboronic acid-ionic liquid (PBA-IL) withmultiple roles that simultaneously realize the highly mechanical, electrical,and versatile properties. This elaborately designed semi-interpenetratingnetwork ICH is fabricated via a facile one-step approach by introducingcellulose nanofibrils(CNFs) into the PBA-IL/acrylamide cross-linked network.Ingeniously, the dynamic boronic ester bonds and physical interactions(hydrogen bonds and electrostatic interactions) of the cross-linked networkendow these hydrogels with remarkable stretchability (1810 ± 38), toughness(2.65 ± 0.03 MJ m~（?3）), self-healing property (92 ± 2 efficiency), adhesiveness,and transparency. Moreover, the construction of this material shows thatCNFs can synergistically enhance mechanical performance and conductivity.The wide working strain range (≈1000) and high sensitivity (GF = 8.36)make this ICH a promising candidate for constructing the next generation ofgel-based strain sensor platforms.

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来源
《Advanced functional materials》 |2022年第33期|2204565.1-2204565.14|共14页
作者
Xue Yao; Sufeng Zhang; Liwei QianNing WeiValentin NicaSergiu CoseriFei Han;
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作者单位

Shaanxi Provincial Key Laboratory of Papermaking Technologyand Specialty Paper DevelopmentNational Demonstration Center for Experimental Light ChemistryEngineering EducationKey Laboratory of Paper Based Functional Materialsof China National Light Industry;

'Petru Poni' Institute of Macromolecular Chemistryof Romanian Academy41 A Gr. Ghica Voda Alley, Iasi 700487, Romania;

The Key Laboratory of Biomedical Information Engineeringof Ministry of EducationBioinspired Engineering and Biomechanics Center (BEBC)School of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049, China;

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cellulose nanofibrils; conductive hydrogels; ionic liquids; multifunctional sensors; self-adhesion; self-healing;

Super Stretchable, Self-Healing, Adhesive Ionic Conductive Hydrogels Based on Tailor-Made Ionic Liquid for High-Performance Strain Sensors

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