Chitosan/poly(4-vinylpyridine) coatings formed on AgNPs-decorated titanium

Electrophoretic deposition (EPD) of chitosan/poly(4-vinylpyridine) (chit/P4VP) coatings on titanium substrates previously decorated with silver nanoparticles (AgNPs) was performed at different content of P4VP in the suspension and different voltage values. The results revealed that the composite coatings were formed, well-adjacent to the titanium substrate, of suitable roughness, hydrophilicity, and corrosion resistance. The voltage value and P4VP content had complex effects on coating properties, due to the effects of process parameters on microstructure and adhesion. The best coatings of both chitosan and P4VP were formed at 10 V at 0.1% (w/w) during a one-minute deposition. These pH-sensitive antibacterial coatings may, based on the present results, be recommended for surface modification of titanium implants.

Automated summary

The study investigated the electrophoretic deposition of chitosan/poly(4-vinylpyridine) coatings on titanium substrates decorated with silver nanoparticles. The results showed that the best coatings were formed at 10V voltage and 0.1% (w/w) P4VP content, indicating potential application of these pH-sensitive coatings in surface modification of titanium implants.