Nanocomposites from PLA/PU containing small concentrations of graphene oxide (GO) were prepared by simple liquid-phase
mixing followed by casting. The as-prepared ternary PLA/PU/GO composite films exhibited good antibacterial activity against
the gram-positive Staphylococcus aureusand the gram-negativeEscherichia coli, due to the excellent antibacterial property of
GO sheets with high specific surface area. The addition of GO inhibited the attachment and proliferation of microbes on the
film surfaces, resulting in that the PLA/PU/GO composite films show remarkably improved antibacterial activity compared with
PLA/PU composite film. The inhibition efficiency is proportional to the amount of GO. Furthermore, PLA/PU/GO composite
fibrous paper was fabricated using electrospinning and exhibited good biocompatibility. The addition of GO does not destroy
normal cell’s proliferation and differentiation. PLA/PU/GO composites with good antibacterial activity and biocompatibilitymake
it attractive for the environmental and clinical applications and also provide a candidate for future application of tissue engineering.