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. Author manuscript; available in PMC: 2020 Nov 27.
Published in final edited form as: J Mater Chem B. 2019 Jan 4;7(10):1753–1760. doi: 10.1039/c8tb02593b

Fig. 2.

Fig. 2

DN hydrogels exhibit viscoelastic properties. (A) Schematic illustrating DN network formation through the combination of (i) a guest-host (GH) network and (ii) covalently crosslinked PEG-fibrinogen (8.5 mg mL−1) with or without additional PEG-DA. Schematics of network tunability where the viscoelasticity of DN hydrogels is controlled through the amount of additional PEG-DA (elasticity) and the GH concentration (viscosity). Representative time sweeps (1.0 Hz, 0.5% strain) of storage (G′, filled symbols) and loss (G″, empty symbols) moduli of DN hydrogels (PEG-fibrinogen (8.5 mg mL−1) plus 2% PEG-DA) containing either (B) 3% or (C) 5% GH concentration. (D) Representative frequency sweeps (0.01–100 Hz, 0.5% strain) of DN hydrogels (PEG-fibrinogen (8.5 mg mL−1) plus 2% PEG-DA) without (0%) or with (3% or 5%) GH of different concentrations.