Abstract
The antibacterial behavior of CS-Cu (chitosan-copper complex) powder and their composite coatings were investigated against Escherichia coli (DH5α). CS-Cu powder and Al (aluminum) based CS-Cu composite powders were synthesized using in-house powder processing techniques. The results indicated that the antibacterial effect of all the powders increased with the proportion of CS-Cu powder. These composite powders were subsequently used as feedstock to generate antibacterial coatings via cold spray technology. The ratios of CS-Cu to Al in their composite powders were 25:75, 50:50, and 75:25 (wt.%). Microstructural characterization and phase analysis of feedstock powders and as-deposited coatings were carried out using FESEM/EDX and FTIR. Antibacterial composite CS-Cu/Al coatings were successfully deposited using cold spraying parameters of 6-8 bars at preheated helium gas, temperature between 140 and 150 °C. The coatings retained the antibacterial properties of the original feedstock powders.
| Original language | English |
|---|---|
| Pages (from-to) | 600-608 |
| Number of pages | 9 |
| Journal | Journal of Thermal Spray Technology |
| Volume | 18 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Dec 2009 |
| Externally published | Yes |
ASJC Scopus Subject Areas
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Materials Chemistry
Keywords
- Aluminum composites
- Biomaterial
- Biomaterials of TS coatings
- Cold gas dynamic spraying
- Composite materials
- Nanostructured coatings
- Nanostructured materials