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(A) Shear-thin/recovery process monitored rheologically for a 1 wt% PEP6R hydrogel at 37°C. Initial time sweep (6 rad/s and 0.2 % strain) monitors gel formation for 1 h after gelation was initiated. Then, application of 1000 % strain for 30 s, shear-thins the gel. Finally, a time sweep (6 rad/s, 0.2 % strain) monitors hydrogel recovery for 1 h. (B) Photograph of a 1 wt% PEP6R hydrogel prepared in a syringe and shear-thin delivered to a vertical glass surface.
