| Samples | Time of degradation (days) | Tg (˚C) | pH |
| PLGA | 0 | 45 ± 0.9 | - |
| PLGA sample 1 | 6 | 44 ± 0.5 | 7.4 ± 0.12 |
| PLGA sample 2 | 12 | 42 ± 0.8 | 7.4 ± 0 |
| PLGA sample 3 | 19 | 31 ± 1.2 | 7.4 ± 0 |
| PLGA sample 4 | 28 | 17 ± 0.5 | 6.9 ± 0 |
| PLGA sample 5 | 40 | 18 ± 0.5 | 2.5 ± 0.05 |
| PLGA sample 6 | 55 | 20 ± 0.5 | 2.3 ± 0 |