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Design Matrix.
| Experiment Number | Experiment Name | Run Order | X1 | X2 | X3 |
|---|---|---|---|---|---|
| 1 | N1 | 14 | 5 | 1 | 4.5 |
| 2 | N2 | 3 | 20 | 1 | 4.5 |
| 3 | N3 | 7 | 5 | 4 | 4.5 |
| 4 | N4 | 12 | 20 | 4 | 4.5 |
| 5 | N5 | 8 | 5 | 2.5 | 3 |
| 6 | N6 | 4 | 20 | 2.5 | 3 |
| 7 | N7 | 5 | 5 | 2.5 | 6 |
| 8 | N8 | 10 | 20 | 2.5 | 6 |
| 9 | N9 | 1 | 12.5 | 1 | 3 |
| 10 | N10 | 2 | 12.5 | 4 | 3 |
| 11 | N11 | 13 | 12.5 | 1 | 6 |
| 12 | N12 | 6 | 12.5 | 4 | 6 |
| 13 | N13 | 9 | 12.5 | 2.5 | 4.5 |
| 14 | N14 | 15 | 12.5 | 2.5 | 4.5 |
| 15 | N15 | 11 | 12.5 | 2.5 | 4.5 |
X1 – PLGA concentration; X2 – PVA concentration; X3 – stirring speed
