Figure 4
From: Ultra-stretchable hydrogels with hierarchical hydrogen bonds
Photographs of D50A50U0.2 hydrogel with a notch in tensile test (v = 25 mm/min). The hydrogel (width = 24 mm, length = 15 mm) containing the notch (width = 12 mm) was stretched to 19.6 times its initial length. Edited by WPS Office with the version 11.1.0.9513. https://pc.wps.cn/.
