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Integration of flexible,recyclable,and transient gelatin hydrogels toward multifunctional electronics

Journal of Materials Science & Technology 2023年第14期145卷 83-92页

作者： Rui Yin Chen Zhang Jian Shao Youyou Chen Ao Yin Qiang Feng Shuqin Chen Fei Peng Xing Ma Cheng-Yan Xu Feihua Liu Weiwei Zhao Sauvage Laboratory for Smart Materials School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Shenzhen Key Laboratory of Flexible Printed Electronics Technology Harbin Institute of Technology(Shenzhen)Shenzhen 518055China State Key Laboratory of Advanced Welding&Joining Harbin Institute of TechnologyHarbin 150001China

Facing the challenges posed by exponentially increasing e-waste,the development of recyclable and tran-sient electronics has paved the way to an environmentally-friendly progression strategy,where electron-ics can disintegrate and/or degrade into eco-friendly end products in a controlled *** polymers possess cost and energy efficiency,easy modification,and fast degradation,all of which are ideal prop-erties for transient *** is especially attractive due to its unique thermoreversible gelation processes,yet its huge potential as a multifunctional electronic material has not been well-researched due to its limited mechanical strength and low ***,we explored versatile applications of gelatin-based hydrogels through the assistance of multifunctional additives like carbon nanotubes to enhance their electromechanical *** optimized gelatin hydrogel displays not only a high conductivity of 0.93 S/m,electromagnetic shielding effectiveness of 39.6 dB,and tensile stress tolerance of 263 kPa,but also shows a negative permittivity phenomenon,which may find versatile applications in novel *** a proof of concept,hydrogels were assembled as wearable sensors to sensitively de-tect static and dynamic pressures and strains generated by solids,liquids,and airflow,as well as diverse body ***,the recyclability,biocompatibility,and degradability of gelatin-based hy-drogels were well studied and *** work outlines a facile method to design multifunctional transient materials for wearable,sustainable,and eco-friendly electronics.

关键词： gelatin hydrogels Carbon nanotubes Negative permittivity Electromagnetic interference shielding Wearable sensor

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