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Supramolecular Ionogels Tougher than Metals
Weizheng Li1, Lingling Li1, Ziyang Liu1
1Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies College of Chemistry, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Advanced Materials (Deerfield Beach, Fla.)
|April 24, 2023
Summary
Researchers developed high-strength ionogels with remarkable toughness and large deformation capabilities. These advanced materials offer green recovery and restoration, overcoming limitations of conventional materials.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Conventional high-strength materials like metals and plastics often exhibit poor deformability.
- Simultaneously achieving high strength and large deformation remains a significant challenge in materials development.
Purpose of the Study:
- To develop novel high-strength ionogels with enhanced mechanical properties.
- To investigate the synergy between force-induced crystallization and supramolecular ionic networks for material design.
Main Methods:
- Creation of supramolecular ionic networks using halometallate ionic liquids.
- Incorporation of poly(vinyl alcohol) to form ionogels.
- Characterization of mechanical properties including stress, strain, and toughness.
Main Results:
- The prepared poly(vinyl alcohol)/halometallate ionic liquid ionogels exhibited exceptional mechanical properties.
- Achieved ultimate fracture stress of 63.1 ± 2.1 MPa and strain of 5248 ± 113%.
- Demonstrated unprecedented toughness of 1947 ± 52 MJ m-3, surpassing most metals and alloys.
Conclusions:
- The developed ionogels offer a promising solution for materials requiring both high strength and large deformability.
- The ionogels exhibit green recovery and restoration of mechanical properties through water-induced reversibility.
- This work paves the way for advanced materials with superior performance and recyclability.
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