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Biaxially ductile supramolecular polymer networks
Tong Wu1,2,3,4, Zixiang Zhou1, Junting Huang1
1Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing 100871, P.R. China.
Science Advances
|April 3, 2026
Summary
Researchers developed new supramolecular polymer networks with slow-dissociative cross-linkers, achieving unprecedented biaxial ductility and high compressive strength for advanced soft materials.
Area of Science:
- Polymer Science
- Materials Science
- Soft Matter Physics
Background:
- Supramolecular polymer networks are transiently cross-linked soft materials with notable properties like toughness and recyclability.
- Previous research optimized uniaxial mechanical features but lacked biaxial ductility.
Purpose of the Study:
- To engineer biaxially ductile supramolecular polymer networks.
- To overcome limitations in previous network designs regarding multi-axial deformation.
Main Methods:
- Constructed networks using slow-dissociative, noncovalent cross-linkers.
- Controlled cross-link dissociation kinetics to achieve glass-like network behavior.
- Developed a universal method for quantifying biaxial mechanical properties.
Main Results:
- Achieved biaxially ductile supramolecular polymer networks with enhanced compressibility and stretchability.
- Demonstrated high compressive strength (>160 MPa) and large areal strain (up to 10,000%).
- Overcame biaxial deformation locking through dynamic cross-link dynamics.
Conclusions:
- Slow-dissociative cross-linkers enable the design of biaxially ductile supramolecular networks.
- These materials exhibit superior compressive and stretchable properties.
- Potential applications in bioelectronic interfaces, soft robotics, and tissue implants.
