Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 32, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202101825
Keywords
amphibious self-healing; magnetic soft robots; modular assembly; supramolecular elastomers
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Funding
- A*STAR [2019 AME IRG, A2083c0059]
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The research introduces a self-healing supramolecular magnetic elastomer (SHSME) with high mechanical strength and fast self-healing capability. This material enables diverse robotic applications such as rapid amphibious function recovery, soft robots with complex geometries, and robotic tasking in confined spaces.
Intrinsically self-healing stretchable polymers have been intensively explored for soft robotic applications due to their mechanical compliance and damage resilience. However, their prevalent use in real-world robotic applications is currently hindered by various limitations such as low mechanical strength, long healing time, and external energy input requirements. Here, a self-healing supramolecular magnetic elastomer (SHSME), featuring a hierarchical dynamic polymer network with abundant reversible bonds, is introduced. The SHSME exhibits high mechanical strength (Young's modulus of 1.2 MPa, similar to silicone rubber) and fast self-healing capability (300% stretch strain after 5 s autonomous repair at ambient temperature). A few SHSME-based robotic demonstrations, namely, rapid amphibious function recovery, modular-assembling-prototyping soft robots with complex geometries and diverse functionalities, as well as a dismembering-navigation-assembly strategy for robotic tasking in confined spaces are showcased. Notably, the SHSME framework supports circular material design, as it is thermoreformable for recycling, demonstrates autorepair for extended lifespan, and is modularizable for customized constructs and functions.
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