Figure 8.

(a) Schematic illustrations of a cartilage structure, intercellular substance of cartilage tissue and the nanostructure of composite consisting of hydrogen-bonded interwoven network of 2D WS₂ and PU matrix. (b) Schematics of the dynamic noncovalent bonding interaction between PU and interwoven network of 2D WS₂. (c) Schematic illustrations of the nanostructure of the original sample and stretching sample. (d) 2D SAXS images of the 16 wt% TA-WS₂/PU with different tensile strain during uniaxial stretching process. (e) Mechanical self-healing performance of PU composites filled with different contents of TA-WS₂. Reproduced with permission [177]. Copyright 2021 Springer Nature.