Research Article
Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes
Table 3
Utilities and averaged importance scores for different factors.
| Factors and levels | Utility estimate | Averaged importance score (%) |
| Swelling time | | | No swelling | −0.889 | 31.94 | Swelling for 1 h | −0.667 | Swelling for 24 h | 1.556 | Concentration | | | 0.05 M | 0.222 | 14.76 | 0.075 M | 0.333 | 0.1 M | −0.556 | Solution | | | 50% ethanol | −1.500 | 34.36 | 96% ethanol | 1.500 | Reaction time | | | 0.5 h | 0 | 18.94 | 2 h | 0.111 | 4 h | −0.111 | (Constant) | 5.500 | |
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