Antibacterial masterbatches are concentrated composites produced by uniformly dispersing antimicrobial agents-such as nanosilver, zinc oxide, and titanium dioxide-within a base resin matrix; they serve as the core material for manufacturing antibacterial plastics and fibers. By leveraging masterbatch technology, these materials ensure the stable distribution of antimicrobial agents throughout the matrix, thereby endowing finished products with bactericidal, bacteriostatic, anti-mold, deodorizing, and self-cleaning properties.
The bactericidal mechanism of antibacterial masterbatches is predicated on the unique characteristics of nanomaterials. These mechanisms include electrostatic adsorption that disrupts bacterial cell wall structures, the elution of zinc ions that interferes with microbial metabolism, and photocatalysis that generates reactive oxygen radicals to inactivate pathogens. Notably, nano-zinc oxide-owing to its positively charged surface and structural defects-can bind to negatively charged bacterial cells; when combined with photocatalysis to generate potent oxidizing agents such as H₂O₂, it achieves a synergistic bactericidal effect, demonstrating an elimination rate exceeding 95% against pathogens such as *E. coli* and *S. aureus*.
These materials are widely utilized in plastic products prone to bacterial proliferation-such as telephones, toys, and food packaging. As the plastics industry continues to evolve, the market demand for antibacterial masterbatches is on the rise; however, the large-scale application of nanomaterials within the plastics sector still necessitates further technological breakthroughs. Companies such as Bofu Technology and Longda Nano have driven the industrialization of nano-zinc oxide antibacterial masterbatches through dedicated research and development efforts. Furthermore, in 2026, companies including Juze New Materials explored the potential applications of antibacterial masterbatches within the robotics sector.
