Fig. 4: Self-reinforced mechanism and uniformity characterization of HEDN-0.8 hydrogel. | Nature Communications

Fig. 4: Self-reinforced mechanism and uniformity characterization of HEDN-0.8 hydrogel.

From: Tough double network hydrogels with rapid self-reinforcement and low hysteresis based on highly entangled networks

Fig. 4

Polarized optical images of HEDN-0.8 (a) and TDN (b) hydrogel with increasing strains. Photos with a yellow background are regular light microscope images, those with a black background were taken in polarized mode. The stretching direction of the hydrogel samples forms an angle of 45° to the polarizer and analyzer. The direction of A: analyzer, P: polarizer. Scale bars, 500 μm. c Normalized birefringence of TDN and HEDN-0.8 hydrogels with increasing strains. d SAXS scattering intensity (I) vs scattering vector (q) profiles of TDN and HEDN-0.8 hydrogels with different strains. SAXS profiles of TDN (e) and HEDN-0.8 (f) hydrogels with different strains in the perpendicular and parallel directions.

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