Fig. 8

a Bacteriostatic circles and b radius of bacteriostatic circle of S. aureus after treatment with PLA, PLA/SCS, PLA/SCS/PDA and PLA/SCS/PDA-GS nanofiber membranes; c Photographs and d relative bacterial survival rates of S. aureus after coculture with PLA, PLA/SCS, PLA/SCS/PDA and PLA/SCS/PDA-GS nanofiber membranes for 0 min and 15 min respectively; Live/dead staining of S. aureus incubated with (e1, e5, e9) PLA, (e2, e6, e10) PLA/SCS, (e3, e7, e11) PLA/SCS/PDA and (e4, e8, e12) PLA/SCS/PDA-GS nanofiber membranes for 15 min (SYTO9 and PI stained live bacteria and dead bacteria, respectively)