Table 5.
Actual (coded) values for the BBD process variables.
| Run | Independent Variables | Responses | |||||
|---|---|---|---|---|---|---|---|
| X1 Shellac Content (% w/w) |
X2 Extract Content (% w/w) |
X3 Applied Voltage (kV) |
X4 Feed Rate (mL/h) |
R1 Fiber Diameter (nm) |
R2 Bead-to-Fiber Ratio |
R3 Entrapment Efficiency (%) |
|
| 1 | 0 (40.00) | 0 (2.50) | 0 (16.50) | 0 (0.80) | 343.99 ± 13.90 | 0.33 ± 0.02 | 82.33 |
| 2 | 0 (40.00) | 0 (2.50) | 1 (24.00) | −1 (0.40) | 335.26 ± 3.92 | 0.43 ± 0.05 | 96.04 |
| 3 | 1 (45.00) | 0 (2.50) | 1 (24.00) | 0 (0.80) | 446.89 ± 13.01 | 0.09 ± 0.08 | 77.44 |
| 4 | −1(35.00) | −1 (1.00) | 0 (16.50) | 0 (0.80) | 310.52 ± 29.01 | 2.37 ± 0.49 | 96.81 |
| 5 | 0 (40.00) | 0 (2.50) | 0 (16.50) | 0 (0.80) | 359.51 ± 5.93 | 0.46 ± 0.12 | 82.94 |
| 6 | 1 (45.00) | −1 (1.00) | 0 (16.50) | 0 (0.80) | 355.37 ± 10.94 | 0.05 ± 0.04 | 70.53 |
| 7 | 0 (40.00) | 0 (2.50) | 1 (24.00) | 1 (1.20) | 336.23 ± 20.90 | 0.16 ± 0.03 | 90.05 |
| 8 | −1(35.00) | 0 (2.50) | −1 (9.00) | 0 (0.80) | 325.04 ± 26.16 | 4.05 ± 0.23 | 102.99 |
| 9 | 0 (40.00) | 1 (4.00) | 1 (24.00) | 0 (0.80) | 351.06 ± 20.18 | 0.09 ± 0.01 | 95.52 |
| 10 | 1 (45.00) | 0 (2.50) | 0 (16.50) | 1 (1.20) | 414.27 ± 19.82 | 0.02 ± 0.01 | 68.97 |
| 11 | −1(35.00) | 0 (2.50) | 1 (24.00) | 0 (0.80) | 312.57 ± 8.51 | 1.47 ± 0.20 | 105.42 |
| 12 | −1(35.00) | 1 (4.00) | 0 (16.50) | 0 (0.80) | 280.29 ± 21.53 | 1.99 ± 0.65 | 77.55 |
| 13 | 1 (45.00) | 1 (4.00) | 0 (16.50) | 0 (0.80) | 422.24 ± 22.60 | 0.02 ± 0.01 | 66.39 |
| 14 | 0 (40.00) | 0 (2.50) | 0 (16.50) | 0 (0.80) | 319.79 ± 17.05 | 0.57 ± 0.11 | 83.54 |
| 15 | 0 (40.00) | 1 (4.00) | 0 (16.50) | −1 (0.40) | 276.04 ± 10.89 | 0.09 ± 0.04 | 76.70 |
| 16 | 1 (45.00) | 0 (2.50) | 0 (16.50) | −1 (0.40) | 390.48 ± 15.29 | 0.03 ± 0.01 | 58.88 |
| 17 | −1(35.00) | 0 (2.50) | 0 (16.50) | −1 (0.40) | 259.94 ± 23.12 | 2.13 ± 0.13 | 99.81 |
| 18 | 0 (40.00) | 0 (2.50) | −1 (9.00) | 1 (1.20) | 426.59 ± 11.20 | 1.65 ± 0.44 | 80.84 |
| 19 | 0 (40.00) | 1 (4.00) | 0 (16.50) | 1 (1.20) | 277.07 ± 10.24 | 0.07 ± 0.02 | 87.74 |
| 20 | 0 (40.00) | −1 (1.00) | 0 (16.50) | 1 (1.20) | 291.10 ± 7.12 | 0.34 ± 0.06 | 93.81 |
| 21 | 0 (40.00) | 0 (2.50) | 0 (16.50) | 0 (0.80) | 310.52 ± 2.16 | 0.39 ± 0.07 | 90.24 |
| 22 | 0 (40.00) | −1 (1.00) | 1 (24.00) | 0 (0.80) | 356.75 ± 23.34 | 0.22 ± 0.03 | 99.44 |
| 23 | 0 (40.00) | 1 (4.00) | −1 (9.00) | 0 (0.80) | 480.01 ± 8.57 | 1.16 ± 0.40 | 77.87 |
| 24 | 1 (45.00) | 0 (2.50) | −1 (9.00) | 0 (0.80) | 523.86 ± 6.69 | 0.25 ± 0.06 | 59.84 |
| 25 | −1(35.00) | 0 (2.50) | 0 (16.50) | 1 (1.20) | 226.20 ± 5.42 | 2.62 ± 0.97 | 88.39 |
| 26 | 0 (40.00) | 0 (2.50) | 0 (16.50) | 0 (0.80) | 318.21 ± 2.27 | 0.38 ± 0.10 | 82.19 |
| 27 | 0 (40.00) | 0 (2.50) | −1 (9.00) | −1 (0.40) | 462.28 ± 7.76 | 1.31 ± 0.47 | 74.99 |
| 28 | 0 (40.00) | −1 (1.00) | 0 (16.50) | −1 (0.40) | 332.74 ± 10.42 | 0.37 ± 0.12 | 85.82 |
| 29 | 0 (40.00) | −1 (1.00) | −1 (9.00) | 0 (0.80) | 410.33 ± 6.35 | 1.48 ± 0.69 | 95.13 |