Fig. 4.

Amplitude (A–F) and phase (G–L) of dynamic stiffness of PEG₅₀₈, PEG_3.4k, PEG_6k, and PEG_10k at 10% (A, D, G, J), 20% (B, E, H, K), and 30% w/w (C, F, I, L) with 0.1% w/w I2959. Gels were compressed dynamically with 0.5% amplitude and 0.01, 0.1, and 1 Hz at 15% (A–C, G–I) and 30% (D–F, J–L) static offsets. Data are mean ± SEM (n = 4).