A novel strategy for fabrication of antistatic and antibacterial fabric via layer-by-layer self-assembly

Metal ions coordination modification is an efficient method for preparing antibacterial textile, but there are still problems such as unstable coordination and poor antibacterial durability. Herein, a copper ion-crosslinked sodium alginate-graphene oxide (Cu2+/SA-GO) structure was designed and constructed on the nylon 66 fabric with polydopamine (PDA)-mediated layer-by-layer self-assembled technology. The cross-linked network structure of Cu2+ and SA-GO not only improved the loading fastness of Cu2+ but also promoted the saltwater resistance of the SA-based coatings. Concurrently, the PDA mediated the layer self-assembly process and facilitated the durability of the coating simultaneously. The results showed that the antibacterial ratio of the prepared fabric against Staphylococcus aureus and Escherichia coli were still up to 99.9 % after 30 times washing. In addition, the modified fabric exhibited good antistatic property with a surface resistivity of about 108 omega.cm, which was attributed to the strong hydrophilic property of the self-assembled coating. This work may provide a new method for the efficient preparation of long-lasting antibacterial fabrics.