Table 3. The SPF and UPF Values of Developed Composite Films.
| % blocking |
|||||||
|---|---|---|---|---|---|---|---|
| S.no. | Samples | UVA | UVB | SPF | UVP (%) | UPF | UPF ratings |
| 1. | PVA | 12.63 | 16.15 | 0.79 | nil | 0.03 | Nonrateble |
| 2. | PVA/collagen | 31.21 | 71.34 | 2.96 | 66.30 | 5.71 | Nonrateble |
| 3. | PVA/collagen/B1 (0.25%) | 65.98 | 92.43 | 5.41 | 81.55 | 7.01 | Nonrateble |
| 4. | PVA/collagen/B1 (0.5%) | 85.77 | 96.18 | 9.33 | 89.29 | 18.38 | Good protection |
| 5. | PVA/collagen/B1 (1%) | 66.09 | 97.07 | 9.57 | 89.56 | 22.50 | Moderate protection |
| 6. | PVA/collagen/B1 (2%) | 90.23 | 99.75 | 9.75 | 89.75 | 48.09 | Excellent protection |
| 7. | PVA/collagen/B1 (4%) | 98.07 | 99.97 | 27.53 | 96.37 | 58.23 | Excellent protection |