Figure 6.

Mfp-1/HA coacervates’ coefficient of friction (inset) and damage mitigation, as demonstrated by the magnitude of load (F_D) before shear-induced damage. Five different mfp-1/HA coacervate systems are compared: mcfp-1/HA 7:3 ratio (teal), 1:1 ratio (black), and 3:7 ratio (purple) compared to rmfp-1-Dopa/HA (red) and rmfp-1/HA (blue) ratios. Data are the means and standard deviations for n = 3–4. Inset: Friction force (F_∥) vs normal load (F_⊥) for native and recombinant coacervates. For comparison, the coefficient of friction of rmfp-151/HA coacervates (μ = 1.3)²⁴ and synovial fluid (μ = 0.15)²⁸ from previous works have been included. * Indicates where damage occurred (see inset).