Biomimetic high performance artificial muscle built on sacrificial coordination network and mechanical training process

Zhikai Tu, Weifeng Liu (), Jin Wang, Xueqing Qiu (), Jinhao Huang, Jinxing Li and Hongming Lou
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Zhikai Tu: South China University of Technology
Weifeng Liu: South China University of Technology
Jin Wang: South China University of Technology
Xueqing Qiu: Guangdong University of Technology
Jinhao Huang: South China University of Technology
Jinxing Li: South China University of Technology
Hongming Lou: South China University of Technology

Nature Communications, 2021, vol. 12, issue 1, 1-11

Abstract: Abstract Artificial muscle materials promise incredible applications in actuators, robotics and medical apparatus, yet the ability to mimic the full characteristics of skeletal muscles into synthetic materials remains a huge challenge. Herein, inspired by the dynamic sacrificial bonds in biomaterials and the self-strengthening of skeletal muscles by physical exercise, high performance artificial muscle material is prepared by rearrangement of sacrificial coordination bonds in the polyolefin elastomer via a repetitive mechanical training process. Biomass lignin is incorporated as a green reinforcer for the construction of interfacial coordination bonds. The prepared artificial muscle material exhibits high actuation strain (>40%), high actuation stress (1.5 MPa) which can lift more than 10,000 times its own weight with 30% strain, characteristics of excellent self-strengthening by mechanical training, strain-adaptive stiffening, and heat/electric programmable actuation performance. In this work, we show a facile strategy for the fabrication of intelligent materials using easily available raw materials.

Date: 2021
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DOI: 10.1038/s41467-021-23204-x

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