Table 7.
ANOVA statistical results of the response surface two-factor interaction model for zeta potential variation.
| Source | Sum of Squares | df | Mean Square | F-value | p-value | |
|---|---|---|---|---|---|---|
| Model (two-factor interaction) | 1211.83 | 6 | 201.97 | 10.45 | 0.0008 | significant |
| A-PAC dosage | 576.64 | 1 | 576.64 | 29.83 | 0.0003 | |
| B-CPAM dosage | 327.42 | 1 | 327.42 | 16.94 | 0.0021 | |
| C-pH | 91.53 | 1 | 91.53 | 4.74 | 0.0546 | |
| AB | 102.01 | 1 | 102.01 | 5.28 | 0.0445 | |
| AC | 62.09 | 1 | 62.09 | 3.21 | 0.1033 | |
| BC | 52.13 | 1 | 52.13 | 2.7 | 0.1316 | |
| Residual | 193.3 | 10 | 19.33 | |||
| Lack of Fit | 180.74 | 6 | 30.12 | 9.59 | 0.0232 | significant |
| Pure Error | 12.56 | 4 | 3.14 | |||
| Corrected Total Sum of Squares | 1405.13 | 16 | ||||
| Coefficient of variance (CV, %) | 93.35 | |||||
| R2 | 0.8624 | |||||
| Adjusted R2 | 0.7799 | |||||
| Predicted R2 | 0.4134 | |||||
| Adequate precision | 11.81 |