Table 4 Optimized formulation parameters and mechanistic rationale.
Parameter | Optimal range | Mechanistic justification |
|---|---|---|
Particle size (nm) | 80–200 | ↑ Surface area → higher loading and cellular uptake |
Zeta potential (mV) | − 30 to − 50 | Stable electrostatic repulsion per DLVO theory |
Polymer/lipid ratio | 2–4:1 | Balanced matrix for drug entrapment and release |
Surfactant Conc. (% w/v) | 0.2–0.8 | Controlled interfacial tension for micellar formation |
PEGylation | Present | Steric shielding and longer circulation |