Antibacterial masterbatch is a concentrated form of various antibacterial agents uniformly dispersed in a base resin. It is characterized by its antibacterial, bactericidal, antifungal, deodorizing, and self-cleaning properties. The antibacterial properties are often achieved by incorporating nanomaterials such as nano-silver, nano-zinc oxide, nano-copper oxide, or nano-titanium dioxide. These nanomaterials can effectively kill or inhibit the growth of bacteria, fungi, and other microorganisms. For instance, nano-zinc oxide catalyzes the production of H2O2 from water on the surface of bacteria, which then disrupts the bacterial cell structure and leads to cell death. Additionally, the decomposition products of H2O2, such as hydroxyl and reactive oxygen radicals, can react with microbial proteins and nucleic acids, further damaging their structures.