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Average particle size and zeta potential of the different formulations
| Formulation code | Average particle size (nm) | Polydispersity index | Zeta potential (mV) |
|---|---|---|---|
| NP1 | 242.5 | 1.00 | −10.5 |
| NP2 | 331.8 | 0.143 | −11.6 |
| NP3 | 375.6 | 0.016 | −16.5 |
| NP4 | 382.0 | 0.611 | −16.1 |
