Robust and Dynamic Polymer Networks Enabled by Woven Crosslinks

Crosslinking plays a crucial role in determining mechanical properties of polymer materials. Although various crosslinks based on covalent or noncovalent bonds have been adopted, it remains an enormous challenge to develop a crosslink which could endow corresponding polymer network with robust yet d...

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Published in:Angewandte Chemie International Edition 2022-10, Vol.61 (43), p.e202210078-n/a
Main Authors: Li, Guangfeng, Zhao, Jun, Zhang, Zhaoming, Zhao, Xinyang, Cheng, Lin, Liu, Yuhang, Guo, Zhewen, Yu, Wei, Yan, Xuzhou
Format: Article
Language:English
Subjects:
Crosslinking
Ductility
Dynamic Materials
Elastic recovery
Materials fatigue
Mechanical Adaptivity
Mechanical properties
Metal Coordination
Polymer Networks
Polymers
Robustness
Stiffness
Supramolecular polymers
Woven Crosslinks
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Summary:Crosslinking plays a crucial role in determining mechanical properties of polymer materials. Although various crosslinks based on covalent or noncovalent bonds have been adopted, it remains an enormous challenge to develop a crosslink which could endow corresponding polymer network with robust yet dynamic properties. Herein, we report a crosslink simultaneously having dynamic property and woven geometry, and the polymer network with woven crosslinks (WPN) could integrate the merits of covalent polymer network (CPN) and supramolecular polymer network (SPN). In specific, the WPN not only exhibits comparable stiffness, strength, elastic recovery, and anti‐fatigue property to those of CPN, but also possesses decent mechanical adaptivity and ductility, similar to those of SPN. Particularly, its toughness and puncture resistance are much superior to those of the others. Besides, the dynamicity of woven crosslink also imparts good performances of self‐healing and processability to WPN. Woven nodes, serving as dynamic crosslinks, afford a woven polymer network (WPN). The WPN exhibits comparable stiffness, strength, elastic recovery, and anti‐fatigue properties to those of covalent polymer networks (CPN), but also possesses decent mechanical adaptivity, self‐healing, and reprocessability, resembling those of supramolecular polymer networks (SPN).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202210078