Table II.
Experimental Plan and Obtained G′, G″ Values for the Factorial Design
| Sample | Carbopol type | Preparation temperature (°C) | Polymer concentration (% w/v) | Test temperature (°C) | G′ (Pa) | G″ (Pa) |
|---|---|---|---|---|---|---|
| 1 | −1 | −1 | −1 | −1 | 0.50 | 3.30 |
| 2 | +1 | −1 | −1 | −1 | 45.9 | 42.6 |
| 3 | −1 | +1 | −1 | −1 | 9.80 | 10.5 |
| 4 | +1 | +1 | −1 | −1 | 4.70 | 12.8 |
| 5 | −1 | −1 | +1 | −1 | 933 | 289 |
| 6 | +1 | −1 | +1 | −1 | 197 | 139 |
| 7 | −1 | +1 | +1 | −1 | 7,590 | 1,690 |
| 8 | +1 | +1 | +1 | −1 | 8,680 | 1,010 |
| 9 | −1 | −1 | −1 | +1 | 3.80 | 4.90 |
| 10 | +1 | −1 | −1 | +1 | 18.6 | 20.2 |
| 11 | −1 | +1 | −1 | +1 | 45.1 | 18.6 |
| 12 | +1 | +1 | −1 | +1 | 16.8 | 18 |
| 13 | −1 | −1 | +1 | +1 | 1,060 | 266 |
| 14 | +1 | −1 | +1 | +1 | 119 | 87 |
| 15 | −1 | +1 | +1 | +1 | 8,960 | 1,370 |
| 16 | +1 | +1 | +1 | +1 | 25,600 | 41,80 |