The Library
Stretchable, healable, and weldable vitrimer ionogel for ionotronic applications
Tools
Bui, Khoa, T. M. Nguyen, Giao, Vancaeyzeele, Cedric, Vidal, Frederic, Hu, Xiao, Wan, Chaoying and Plesse, Cedric (2023) Stretchable, healable, and weldable vitrimer ionogel for ionotronic applications. Chemical Engineering Journal, 474 . 145533. doi:10.1016/j.cej.2023.145533 ISSN 1385-8947.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://doi.org/10.1016/j.cej.2023.145533
Abstract
The ionogels represents a class of materials consisting of ionic liquid confined in a polymer network. The mobile ions provide ionic conductivity while the polymer network enables flexibility and stretchability. They can exhibit healing, welding, reshaping, and recycling abilities when they are gifted with vitrimer properties, which make them promising candidates for sustainable soft electronics. Herein, vitrimer ionogel based on transesterification was synthesized via the epoxy ring-opening reaction with carboxylic acids of functionalized poly (ethylene glycol) (PEG) and triglycidyl ether crosslinkers in the presence of the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIm TFSI). The ionogel with 50 wt% EMIm TFSI exhibits good maximum strain (300 %), low elastic modulus (60 kPa) and high conductivity (2.6 × 10−4 S cm−1), owing to the plasticizing effect and the introduction of mobile ions. Also, the presence of EMIm TFSI increases the chain mobility, overcoming the dilution effect and consequently facilitating the transesterification reaction of exchangeable β-hydroxy ester linkages. Thus, the ionogel shows fast network rearrangement and full recovery of both tensile strength and conductivity properties. The ionogels were applied as strain sensor, soft electrode, and ionic cable, respectively. When used as a piezoresistive strain sensor, the ionogel exhibits high sensitivity (Gauge factor = 2.8), low hysteresis (3 %), low response time delay of 0.5 s and fully recovered its performance after healing from mechanical damage. In addition, the ionogel was applied as electrodes for a dielectric elastomer actuator, the ionogel can be welded onto an elastomer containing the same exchangeable β-hydroxy ester linkages, for the fabrication of multilayer devices. which generated 12 % areal strain under a 42.5 MV/m electrical field. Second, a self-healable ionic cable was fabricated from this multilayer structure. It can transmit music signals and maintain the performance during stretching.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Chemical Engineering Journal | ||||||||
Publisher: | Elsevier BV | ||||||||
ISSN: | 1385-8947 | ||||||||
Official Date: | 15 October 2023 | ||||||||
Dates: |
|
||||||||
Volume: | 474 | ||||||||
Article Number: | 145533 | ||||||||
DOI: | 10.1016/j.cej.2023.145533 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |