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. 2013 Oct 3;3:2811. doi: 10.1038/srep02811

Figure 2. Morphology and mechanical properties of hydrogels.

Figure 2

(a,b) SEM images of hydrogels with O-CMC/monomer = 2.5% (w/w), BIS = 0.02 wt% at different [AAm]/[NVP] ratios of a) 3:1 and b) 1:2 (mol/mol). (c,d) Storage modulus (G′) and loss modulus (G′′) values of the hydrogels on (c) frequency sweeps and (d) strain sweeps: [AAm]/[NVP] = 3:1 (mol/mol), O-CMC/monomer = 2.5% (w/w), and BIS = 0.02 wt% for No.1 and BIS = 0 wt% for No.2. (e–g) Stretching and shrinking processes of the hydrogel (No. 1) dopped with 0.05 wt% rhodamine B during the tensile measurements: (e) the original hydrogel, (f) the hydrogel in elongation, and (g) the hydrogel after elongation.