Fig. 2: Mechanical and shape-memory properties of PTK hydrogel. | Nature Communications

Fig. 2: Mechanical and shape-memory properties of PTK hydrogel.

From: Ultra-durable cell-free bioactive hydrogel with fast shape memory and on-demand drug release for cartilage regeneration

Fig. 2: Mechanical and shape-memory properties of PTK hydrogel.

a Tensile stress-strain curves of PMI, PKG, PTA, and PTK hydrogels. b Successive loading-unloading test of PMI and PTK hydrogels. c The retention ratio of the initial stress at the 0, 20, 200, 1000, 3000, 6000, 10000, and 20000 cycles during the successive loading-unloading test of PMI and PTK hydrogel. d The lap-shear adhesive strength of PTA and PTK hydrogels with cartilage. Photographs of the shape-memory performances of PTK hydrogel with the temporary helix shape (e) and coil shape (f). Scale bar: 5 mm. Data in d are presented as mean values ± SD. (n = 3 independent samples).

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