Strain‐Stiffening, Robust yet Compliant Ionic Elastomer from Highly Entangled Polymer Networks and Metal–Oxygen Interactions

Ion‐conductive elastomers have emerged as ideal candidates for ionic skin and wearable devices due to their intrinsic stretchability and excellent electrical properties. Despite continuous efforts in this field, strain‐stiffening, robust yet compliant ionic elastomers are still unattainable due to t...

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Bibliographic Details
Published in:Advanced functional materials 2024-09, Vol.34 (38), p.n/a
Main Authors: Zhou, Piaopiao, Zhan, Weiqing, Shen, Shengtao, Zhang, Hui, Zou, Zhigang, Lyu, Xiaolin
Format: Article
Language:English
Subjects:
compliant
Continuous fibers
Elastic limit
Elastomers
Electrical properties
ionic elastomer
Modulus of elasticity
Network reliability
Oxygen
Robustness
self‐healing
Stiffening
Strain
strain‐stiffening
Stretchability
tough
Wearable technology
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Summary:Ion‐conductive elastomers have emerged as ideal candidates for ionic skin and wearable devices due to their intrinsic stretchability and excellent electrical properties. Despite continuous efforts in this field, strain‐stiffening, robust yet compliant ionic elastomers are still unattainable due to the limited intermolecular interactions, restricting their reliability and durability in practical applications. Inspired by the interwoven collagen fiber network and synergistic non‐covalent interaction in the dermis, an immense strain‐stiffening, ultra‐stretchable, highly tough, and elastic ionic elastomer are reported by introducing the metal–oxygen interactions into the highly entangled network. The ionic elastomers also show intriguing self‐healing ability, high adhesion, and environmental tolerance, contributed by the dynamic synergistic noncovalent interactions. The prepared ionic skin displays sensitive and stable responses to temperature and strain. This work demonstrates a new design strategy for fabricating high‐performance ionic elastomers with excellent mechanical and electrical properties, showing great prospects in wearable and flexible devices. A strain‐stiffening, robust yet compliant ionic elastomer is prepared by simulating the structure of the dermis. The ionic elastomer possesses immense strain‐stiffening ability, ultra‐stretchability, high elasticity, high toughness, self‐healing ability, good adhesion, and environmental tolerance, which can realize human motion detection and temperature sensing.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.202402952