Research Article
Preparation and Characterization of Biodegradable Composited Films Based on Potato Starch/Glycerol/Gelatin
Table 1
Experiments design with coded and uncoded independent variables.
| | Run | Code variables | Uncoded variables | | X1 | X2 | X3 | Starch concentration | Glycerol concentration | Gelatin concentration |
| | 1 | 1.000 | 0.000 | 1.000 | 4 | 2 | 2 | | 2 | 0.000 | 1.000 | −1.000 | 3 | 2.5 | 1 | | 3 | 0.000 | 0.000 | 0.000 | 3 | 2 | 1.5 | | 4 | 0.000 | 1.000 | 1.000 | 3 | 2.5 | 2 | | 5 | −1.000 | 0.000 | 1.000 | 2 | 2 | 2 | | 6 | 0.000 | 0.000 | 0.000 | 3 | 2 | 1.5 | | 7 | −1.000 | 0.000 | −1.000 | 2 | 2 | 1 | | 8 | −1.000 | 1.000 | 0.000 | 2 | 2.5 | 1.5 | | 9 | −1.000 | −1.000 | 0.000 | 2 | 1.5 | 1.5 | | 10 | 0.000 | 0.000 | 0.000 | 3 | 2 | 1.5 | | 11 | 0.000 | 0.000 | 0.000 | 3 | 2 | 1.5 | | 12 | 1.000 | 0.000 | −1.000 | 4 | 2 | 1 | | 13 | 0.000 | −1.000 | −1.000 | 3 | 1.5 | 1 | | 14 | 1.000 | −1.000 | 0.000 | 4 | 1.5 | 1.5 | | 15 | 0.000 | 0.000 | 0.000 | 3 | 2 | 1.5 | | 16 | 0.000 | −1.000 | 1.000 | 3 | 1.5 | 2 | | 17 | 1.000 | 1.000 | 0.000 | 4 | 2.5 | 1.5 |
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