A sol–gel based silver nanoparticle/polytetrafluorethylene (AgNP/PTFE) coating with enhanced antibacterial and anti-corrosive properties

In this research, a silver nanoparticle/polytetrafluorethylene (AgNP/PTFE) coating for metallic implants was fabricated using facile layer-by-layer method. PTFE nanoparticles were immobilized in sol–gel matrix and dip-coated onto 316L stainless steel via mussel-inspired approach followed by AgNP deposition. Benefiting from the synergistic effect of antibacterial non-stick PTFE, AgNP/PTFE exhibited superior antibiofilm activity against Escherichia coli WT F1693 enhanced corrosion resistance. Compared with surfaces only coated capable sustained release ions, inhibiting up to ~50% bacterial biomass accumulation after 7 days. To understand anti-adhesion mechanism, both classic DLVO XDLVO theories used model explain adhesion. Despite concerns that an over-release ions may cause toxic effects towards mammalian cells, procedures offered ease control over loading, making it potentially useful preventing implant-associated infections.