Figure 5.

Preparation and characterization of the composite sponge scaffold doped with PDA-NPS

(A) PDA-NPS preparation process model diagram.

(B) PDA-NPS synthesis process.

(C) UV spectra of PDA-NPS.

(D) SEM images of PDA-NPS.

(E) The freeze-desiccation-wetting process of the sponge scaffold doped with PDA-NPS.

(F) SEM images of dopamine nanospheres composite sponge.

(G) Relative cell viability.

(H) Fourier infrared spectroscopy.

(I) Antibacterial rates of Escherichia coli (a) and Staphylococcus aureus (b).

(J) Photographs of in vitro antibacterial experiments by AGAR dilution method.

(K) The (a) stress-strain curves and (b) elastic modulus of the material obtained through the tensile test (∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001).