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Unlocking the potential of self-healing and recyclable ionic elastomers for soft robotics applications
S Utrera-Barrios1, N Steenackers2,3, S Terryn2,3
1Institute of Polymer Science and Technology (ICTP), CSIC, Juan de la Cierva 3, 28006 Madrid, Spain. sutrera@ictp.csic.es.
Materials Horizons
|November 24, 2023
Summary
This study introduces advanced ionic elastomers for soft robotics, offering superior mechanical strength, self-healing, and recyclability. These sustainable materials enhance durability and reduce costs in soft robotic applications.
Area of Science:
- Materials Science
- Robotics Engineering
Background:
- Soft robotics materials face limitations in load capacity, durability, and sustainability.
- Conventional solutions often lack long-term ecological viability.
Purpose of the Study:
- To develop mechanically robust, self-healing, and recyclable ionic elastomers for soft robotics.
- To overcome limitations of current soft robotics materials regarding performance and environmental impact.
Main Methods:
- Carboxylated nitrile rubber (XNBR) was used to create ionic elastomers.
- Mechanical properties (tensile strength, elongation), self-healing efficiency, and recyclability were evaluated.
- Tendon-driven soft robotic grippers were fabricated using the developed elastomers.
Main Results:
- Ionic elastomers demonstrated high tensile strength (>19 MPa) and elongation (>650%).
- Materials achieved 100% self-healing efficiency for mechanical properties at 110 °C within 3-5 hours.
- Full recyclability was confirmed over three cycles without significant performance loss.
- Moldable and scalable properties were observed, enabling gripper fabrication.
Conclusions:
- The developed ionic elastomers offer a sustainable and durable solution for soft robotics.
- Self-healing and recyclability features can reduce maintenance costs and extend material lifespan.
- These materials show significant potential for advancing the field of soft robotics.
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