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| formulation code | PMB–PP ratio (w/w) | size (nm) | PDI | zeta potential (mV) |
|---|---|---|---|---|
| F1 | 1:1 | 202.53 ± 1.83 | 0.37 | –19.17 ± 6.56 |
| F2 | 1:2 | 197.13 ± 14.13 | 0.36 | –11.09 ± 3.41 |
| F3 | 1:3 | 727.95 ± 28.07 | 0.49 | –14.90 ± 2.03 |
