文献类型：期刊文献

英文题名：Ultra-highly sensitive graphene/polyaniline@epoxidized natural rubber strain sensors for human motion monitoring

作者：Gao, Yifei[1,2];Sun, Jinyu[1,2];Tian, Xiaohui[1,2];Yuan, Yizhong[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2023

卷号：358

外文期刊名：SENSORS AND ACTUATORS A-PHYSICAL

收录：;EI(收录号：20232114119289);WOS:【SCI-EXPANDED(收录号:WOS:001005378400001)】；

基金：Acknowledgment This work was financially supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 22A201514002) .

语种：英文

外文关键词：Polyaniline; Graphene; Strain sensor

摘要：Flexible strain sensors are one of the core devices in wearable electronics. At present, it is still difficult to develop flexible strain sensors with high stretchability, sensitivity, and long-term stability. In this work, polyaniline (PANI) was coated on the surface of epoxidized natural rubber (ENR) nanospheres to obtain the PANI@ENR nanospheres, and then mechanically blended with graphene (GN) sheets to prepare the GN/PANI@ENR com-posites. The composite conductive networks composed of PANI and GN endow the composites with excellent mechanical, electromechanical and strain-sensing performances. The strain-sensing tests show that the ENR composites possess an ultra-high gauge factor (GF) of 29671.7 within 270% of strain. Meanwhile the composites exhibit excellent cycling stability of over 2500 cycles. In addition, the GN/PANI@ENR strain sensors can monitor the large-strain (finger, wrist, elbow and knee joints bending) and small-strain (strains of vocal cord vibration, pulse, facial muscle movements) motions of the human body in real time, indicating a wide range of potential applications in wearable flexible electronics.