Figure 9.

The fabrication, morphology, and mechanical properties of a skin-inspired composite film

(A) Schematic illustration of the fabrication process of the composite film based on fiat silk cocoons.

(B) SEM image showing the randomly fibrous structure of a fiat silk cocoon.

(C) Optical photograph of the fiat silk cocoon and as-prepared transparent composite film.

(D and E) Bending and twisting of the transparent composite film.

(F) Stress–strain curves of prenotched pure resin and composite films under monotonic loading.

(G) Comparative results showing the most significant mechanical reinforcing effect of this study.

(H) Loading–unloading tests showing the outstanding tear and fatigue resistance of composite film. Adapted with permission from Xu et al. (2020). Copyright 2020, Wiley-VCH.