Figure 1
Figure 2
Comparison of bacterial cell counts on control surfaces and surfaces coated with PEMs
| Polyelectrolyte multilayers | Bacterial count (log/mm2) | Difference to control (A log no. bact./mm2) | Bacterial count (no./mm2) | Difference to control (%) | t-value | p-value |
|---|---|---|---|---|---|---|
| PAH/PSS 5 mmol/L | 3.784 | 0.079 | 6,316 | 17.3 | 3.577 | 0.0010* |
| PAH/PSS 50 mmol/L | 3.651 | 0.212 | 4,771 | 38.1 | 7.942 | 0.0000** |
| PVP-ethyl Br/PSS 5 mmol/L | 3.589 | 0.274 | 4,058 | 47.3 | 11.743 | 0.0000** |
| PVP-ethyl Br/PSS 50 mmol/L | 3.466 | 0.397 | 3,075 | 60.0 | 16.637 | 0.0000** |
| PVP-isobutyl Br/PSS 5 mmol/L | 3.726 | 0.137 | 5,504 | 29.8 | 6.163 | 0.0000** |
| PVP-isobutyl Br/PSS 50 mmol/L | 3.641 | 0.222 | 4,750 | 38.4 | 6.138 | 0.0000** |
| Control - no PEMs | 3.863 | / | 7,708 | / | / | / |