Fig. 2: Characterization of the key systems.
From: Polymerizable rotaxane hydrogels for three-dimensional printing fabrication of wearable sensors
a Powder XRD patterns of CD-AC, LCA-AC, and a mixture of CD-AC with LCA-AC (1/1 mol.), and CD-AC/LCA-AC host-guest complex (1/1 mol.); b apparent reaction heat in calorimetric titrations of CD-AC solution (5.0 mM in EG/water) injecting into LCA-AC solution (0.5 mM in EG/water) at 25 °C and their typical ITC fitting curves; c 2D NOESY 1H NMR spectrum of the host-guest complex of CD-AC with LCA-AC-PEG in D2O (1/1 mol., 25 °C); d tensile stress‒strain curves of PR-Gel with various concentrations of Am (20 w/v%, 30 w/v% and 40 w/v%) at 25 °C; e tensile stress‒strain curves of MBA-Gel, CD-Gel and PR-Gel with a concentration of Am 40 w/v% at 25 °C; f tensile stress‒strain curves of PR-Gel with a concentration of Am 40 w/v% after storing for 10 h at −20, 25 and 60 °C, respectively; g compression curves and h compression modulus of MBA-Gel, CD-Gel and PR-Gel with a concentration of Am 40 w/v% at 25 °C; i photographs of MBA-Gel and PR-Gel with a concentration of Am 40 w/v% before and after compression at 25 °C; j schematic illustration of the crosslinked network structure of the MBA-Gel and PR-Gel; k SAXS patterns of the stretched PR-Gel. The sample is elongated in the horizontal direction in the images and the stretching ratios, include 0, 100, 300, and 500%.
