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A) Storage and B) loss moduli PAAm-D nanocomposite hydrogels during the oscillatory frequency sweep experiment. Hydrogels were equilibrated in pH 3 (●, ○), Z5 (■, □), 7.4 (▲, △), and 9 (◆, ◇ prior to testing. The filled and empty symbols indicate G′ and G″, respectively.
