JianHua Xu, YuKun Li, Tong Liu, Dong Wang, FuYao Sun, Po Hu, Lin Wang, JiaoYang Chen, XueBin Wang, BoWen Yao, JiaJun Fu
Soft self-healing materials are compelling candidates for stretchable devices because of their excellent compliance, extensibility, and self-restorability. However, most existing soft self-healing polymers suffer from crack propagation and irreversible fatigue failure due to easy breakage of their dynamic amorphous low-energy polymer networks. Herein, inspired by distinct structure-property relationship of biological tissues, we propose a supramolecular interfacial assembly strategy of preparing soft self-healing composites with unprecedented crack propagation resistance by structurally engineering preferentially-aligned lamellar structures within dynamic and super-stretchable poly(urea-ureathane) matrixes (which can be elongated to 24750× its original length)...
March 25, 2023: Advanced Materials