Table 1.
Box–Behnken experimental design of three independent variables (X1, X2, and X3) and their respective influences on the corresponding responses (Y1, Y2, Y3, Y4, Y5, Y6 and Y7). All values are presented as mean ± SD (n = 3).
| Code | PUL (mg, X1) |
MTX (mg, X2) |
PG (%, X3) |
Thickness (Y1, µm) |
FE (Y2, Folds) |
TS (Y3, MPa) |
Elongation (Y4, %) |
Moisture Content (Y5, %) |
Moisture Uptake (Y6, MPa) |
D-Time (Y7, s) |
|---|---|---|---|---|---|---|---|---|---|---|
| F1 | 300 | 100 | 15 | 44.1 ± 5.8 | 64.7 ± 7.8 | 11.1 ± 3.5 | 14.0 ± 9.1 | 6.0 ± 1.7 | 5.4 ± 1.6 | 19.0 ± 1.8 |
| F2 | 300 | 100 | 20 | 43.0 ± 5.3 | 80.7 ± 6.7 | 6.3 ± 4.0 | 25.4 ± 3.9 | 6.7 ± 1.9 | 5.7 ± 1.8 | 17.8 ± 1.6 |
| F3 | 300 | - | 25 | 26.0 ± 4.5 | 121.3 ± 3.2 | 7.9 ± 0.9 | 28.4 ± 0.7 | 3.9 ± 0.9 | 2.1 ± 0.5 | 24.7 ± 4.1 |
| F4 | 300 | 100 | 25 | 39.8 ± 5.0 | 110 ± 8.0 | 2.5 ± 0.1 | 58.9 ± 0.3 | 7.5 ± 2.1 | 5.8 ± 1.8 | 16.0 ± 2.4 |
| F5 | 300 | 100 | 30 | 44.2 ± 4.6 | 156.3 ± 10.7 | 1.1 ± 0.9 | 62.2 ± 2.8 | 8.2 ± 2.4 | 6.1 ± 1.9 | 15.3 ± 3.1 |
| F6 | 400 | 100 | 15 | 63.9 ± 7.4 | 88.7 ± 12.9 | 15.7 ± 0.4 | 13.9 ± 0.2 | 5.8 ± 1.8 | 4.4 ± 1.8 | 29.7 ± 2.9 |
| F7 | 400 | 100 | 20 | 62.9 ± 6.8 | 112.7 ± 9.5 | 7.2 ± 4.0 | 24 ± 0.6 | 6.1 ± 2.5 | 4.5 ± 1.9 | 27.0 ± 1.7 |
| F8 | 400 | - | 25 | 40.2 ± 5.3 | 142.3 ± 12.4 | 8.6 ± 8.1 | 27.7 ± 1.5 | 4.5 ± 1.3 | 2.6 ± 0.8 | 35.7 ± 3.0 |
| F9 | 400 | 100 | 25 | 64.2 ± 4.5 | 128.3 ± 8.5 | 5.0 ± 4.0 | 53.2 ± 12.4 | 6.5 ± 2.8 | 4.7 ± 2.0 | 25.0 ± 2.0 |
| F10 | 400 | 100 | 30 | 63.1 ± 4.6 | 193.0 ± 6.1 | 4.4 ± 1.0 | 54.8 ± 12.4 | 7.1 ± 3.0 | 4.8 ± 2.1 | 24.3 ± 2.0 |
| F11 | 500 | 100 | 15 | 84.4 ± 5.0 | 106.3 ± 8.0 | 21.3 ± 1.8 | 13.4 ± 7.1 | 5.2 ± 2.9 | 3.5 ± 1.8 | 36.5 ± 3.3 |
| F12 | 500 | 100 | 20 | 87.0 ± 6.6 | 146.3 ± 7.4 | 9.7 ± 5.9 | 21.1 ± 6.0 | 5.5 ± 3.1 | 3.7 ± 1.6 | 35.2 ± 3.9 |
| F13 | 500 | - | 25 | 66.4 ± 5.5 | 173.0 ± 6.6 | 9.8 ± 9.4 | 25.2 ± 11.3 | 4.9 ± 2.2 | 2.8 ± 1.4 | 44.7 ± 4.2 |
| F14 | 500 | 100 | 25 | 83.8 ± 4.1 | 160.7 ± 7.6 | 6.3 ± 2.7 | 42.1 ± 0.3 | 5.9 ± 3.3 | 4.0 ± 2.0 | 34.3 ± 2.5 |
| F15 | 500 | 100 | 30 | 85.7 ± 5.0 | 243.3 ± 7.5 | 5.2 ± 3.9 | 51.1 ± 8.8 | 6.4 ± 3.6 | 4.5 ± 2.3 | 33.2 ± 2.3 |