Table 1.
Overview of the water contact angles of the clean, pre-treated, unfouled surface (θclean), the oleic-acid-fouled surface before UV irradiation (θ0), the final contact angle after UV irradiation (θf) and irradiation time needed. A dash (-) is used for values that could not be measured.
| Sample | θclean (°) | θ0 (°) | θf (°) | tf (min) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| DuEL TiO2 | 20 | ± | 7 | 71 | ± | 20 | 16 | ± | 4 | 20 |
| DuEL Architectural panel A | 5 | ± | 4 | 52 | ± | 2 | 20 | ± | 4 | 360 |
| DuEL Architectural panel B | 3 | ± | 2 | 52 | ± | 2 | 23 | ± | 1 | 3000 |
| SaniCoat | 88 | ± | 5 | 46 | ± | 4 | 49 | ± | 1 | 360 |
| CleanRock | 71 | ± | 17 | 64 | ± | 16 | 50 | ± | 1 | 420 |
| Architectural panel B | 43 | ± | 6 | 53 | ± | 1 | 51 | ± | 1 | 2520 |
| LVT treated | 70 | ± | 13 | 78 | ± | 5 | 61 | ± | 8 | 1680 |
| Roofing material | 57 | ± | 3 | 61 | ± | 6 | 67.7 | ± | 0.5 | 120 |
| Surface material B | 78 | ± | 8 | 87 | ± | 8 | 81.0 | ± | 0.4 | 360 |
| Surface material A | 77 | ± | 7 | 79 | ± | 8 | 82 | ± | 2 | 360 |
| LVT ref | 93 | ± | 7 | 87 | ± | 5 | 87 | ± | 1 | 1710 |
| Carpet tile treated | - | ± | - | - | ± | - | - | ± | - | - |
| Carpet tile ref | - | ± | - | - | ± | - | - | ± | - | - |