In this study, PLA/PU/GOcomposite filmswere prepared
by introducing GO nanosheets into PLA and PU phases
through liquid-phasemixing and casting.The as-synthesized
composites are characterized by using transmission electron
morphology, X-ray diffraction, and field emission scanning
electronmicroscope. Moreover, we investigate the antibacte-rial activity and biocompatibility of PLA/PU/GO. It showed
remarkably improved antibacterial activity compared with
PLA/PU composite. The addition of small amounts of GO
prevented the attachment and proliferation of microbes on
PLA/PU/GO surfaces, including the gram-positiveStaphylo-coccus aureus (S. aureus)and the gram-negativeEscherichia
coli (E. coli), as causative organisms of many device-related
infections. PLA/PU/GO composites have excellent antibac-terial activity and biocompatibility, suggesting their potential
application in tissue engineering