Fig. 3: Mechanical and durability properties.
From: Sustainable Bi-directional thermoregulation fabric for clothing microclimate
a Comparison of the toughness and elongation of the PU elastomer in this work with those of cross-linked elastic membranes reported in the literature. The inset shows the typical stress-strain curve of the PU elastomer. b Cyclic loading-unloading tensile curves of the PU elastomer at increasing strain. c Tensile tests in successive loading-unloading cycles and after 3 h at 600 % strain. d Schematic illustration of the working mechanism of the PU during the stretch and release process. e Typical stress–strain curves of the PC-M, TC-M, and Bi-DTF. f Cyclic loading–unloading tensile curves of the Bi-DTF. g Photographs of the original, stretched, and recovered membranes. Scale bar: 1 cm. h The curves of peeling force as a function of displacement for composite sample. i Abrasion resistance and (j) washability of our textile. k Multicolor Bi-DTF collected on rollers. Scale bar: 5 cm. The error bars for i and j represent mean ± SD (n = 3 independent samples).
