Fluorine-silicon/N+ modified waterborne acrylic coatings with good anticorrosion and antibacterial performances

Most conventional organic coating resins typically have single anticorrosion function and additive bactericides are often needed to improve their antibacterial properties. In this paper, a waterborne acrylic coating (fluorine-silicon/N+ polyacrylate) with the chemically bonded antibacterial constitutional units have been successfully synthesized via simple soap free emulsion polymerization. The results showed that the antibacterial rate of fluorine-silicon/N+ polyacrylate coating against Staphylococcus aureus and Escherichia coli were 99.99 % and 99.08 %, respectively. In addition, the low frequency impedance model value of coatings (at 0.01 Hz) maintained above 109 Ω cm2 during 10 d immersion in neutral 3.5 wt% NaCl solution. Thus, the fluorine-silicon/N+ polyacrylate coating possesses good antibacterial and anticorrosion performances.