Abstract
Electroless Ag-polytetrafluoroethylene (PTFE) composite coatings were prepared on stainless steel sheets. The existence and distribution of PTFE in the coatings were analysed with an energy dispersive X-ray microanalysis (EDX). The contact angle values and surface energies of the Ag-PTFE coatings, silver coating, stainless steel, titanium and E. coli Rosetta were measured. The experimental results showed that stainless steel surfaces coated with Ag-PTFE reduced E. coli attachment by 94–98%, compared with silver coating, stainless steel or titanium surfaces. The anti-bacterial mechanism of the Ag-PTFE composite coatings was explained with the extended Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. The anticorrosion properties of the Ag-PTFE composite coatings in 0.9% NaCl solution were studied. The results showed that the corrosion resistance of the Ag-PTFE composite coatings was superior to that of stainless steel 316L.
| Original language | English |
|---|---|
| Pages (from-to) | 1620-1627 |
| Number of pages | 8 |
| Journal | Applied Surface Science |
| Volume | 252 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2005 |
Keywords
- Electroless deposition
- Composite coating
- Ag-PTFE
- Adhesion
- Corrosion