Published in

Wiley, Small, 19(18), 2022

DOI: 10.1002/smll.202200533

Links

Tools

Export citation

Search in Google Scholar

Sliding Cyclodextrin Molecules along Polymer Chains to Enhance the Stretchability of Conductive Composites

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

Full text: Unavailable

Green circle
Preprint: archiving allowed
Orange circle
Postprint: archiving restricted
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

AbstractThe demand for stretchable electronics with a broader working range is increasing for wide application in wearable sensors and e‐skin. However, stretchable conductors based on soft elastomers always exhibit low working range due to the inhomogeneous breakage of the conductive network when stretched. Here, a highly stretchable and self‐healable conductor is reported by adopting polyrotaxane and disulfide bonds into the binding layer. The binding layer (PR‐SS) builds the bridge between polymer substrates (PU‐SS) and silver nanowires (AgNWs). The incorporation of sliding molecules endows the stretchable conductor with a long sensing range (190%) due to the energy dissipation derived from the sliding nature of polyrotaxanes, which is two times higher than the working range (93%) of conductors based on AP‐SS without polyrotaxanes. Furthermore, the mechanism of sliding effect for the polyrotaxanes in the elastomers is investigated by SEM for morphological change of AgNWs, in situ small‐angle x‐ray scattering, as well as stress relaxation experiments. Finally, human‐body‐related sensing tests and a self‐correction system in fitness are designed and demonstrated.