Table 2.
Response surface analysis factor design for carboxymethylation.
| Factor | Level | ||
|---|---|---|---|
| Temperature (°C) | 50 | 60 | 70 |
| Dosage of Chloroacetic acid (g) | 1.42 | 1.89 | 2.36 |
| Concentration of Sodium hydroxide (mol/L) | 1.5 | 2 | 2.5 |
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