• 文献标题:   Room-temperature self-healing graphene/rubber-based supramolecular elastomers utilized by dynamic boroxines and hydrogen bonds for human motion detection
  • 文献类型:   Article
  • 作  者:   YE T, KUANG DJ, HAN WY, YIN YJ, WANG CX
  • 作者关键词:   selfhealing, synergistic effect, epoxy natural rubber, epoxy amine reaction, flexible electronic sensor
  • 出版物名称:   COLLOIDS SURFACES APHYSICOCHEMICAL ENGINEERING ASPECTS
  • ISSN:   0927-7757 EI 1873-4359
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.colsurfa.2022.130411 EA NOV 2022
  • 出版年:   2023

▎ 摘  要

Flexible electronic sensors with self-healing capabilities exhibit distinctive fascination in human motion detec-tion. However, it remains challenging in the mechanically robustness, highly healing efficiency, mildly healing condition, and steady electrical performance. Here, a self-healing nanostructured graphene/rubber-based su-pramolecular elastomer (GRSE) with a covalent/non-covalent system is rationally designed. The 1-pyrenamine-modified graphene nanosheets (GPA) disperse uniformly on the modified epoxy natural rubber (S-ENR), leading to good electrical conductivity (0.0029 S-1 m), low percolation threshold (2.73 wt%), a fast-response time (250 ms), and a low stress-strain detection range (1 %). Based on the synergistic effect of dynamic boroxines and interfacial hydrogen binding, GRSE-based sensor exhibits excellent mechanical strength (3.46 MPa) and high-performance healing efficiency (eta = 91.1 %) at room temperature. The GRSE-based sensor can still detect pre-cise and stable sensing signals accurately in human movements (including breath, speech, facial expression, and joint motion) after healing, implying a promising route to develop an efficient and robust self-healing flexible sensor for the more durable human motion detection in practice.