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The degree of erosion (at the eighth hour) by gravimetric method
| Polymer composition | Normality of acetic acid | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.1 N | 0.2 N | 0.4 N | 0.6 N | 1.0 N | ||||||
| Initial | Final | Initial | Final | Initial | Final | Initial | Final | Initial | Final | |
| IPEC (mg) | 573.2 | 400.7 | 570.9 | 351.2 | 548.6 | 336.7 | 569.7 | 199.0 | 554.4 | 159.9 |
| Polymer blend (mg) | 596.8 | 226.8 | 588.3 | 180.8 | 590.3 | 173.0 | 571.2 | 162.0 | 582.3 | 105.7 |
