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The particle size, zeta potential, encapsulation efficiency, and loading capacity of Mt-BH/CS NPs and Blank CS NPs (mean±SD)
| Formulation | Particle size/nm | Zeta potential/mV | PDI | EE/% | DL/% |
|---|---|---|---|---|---|
| NPs | 460±0.6 | 29±0.18 | 0.276 | 36.13±0.16 | 14.5±0.06 |
| Blank NPs | 423±0.9 | 27±0.62 | 0.26 |
Abbreviations: BH, betaxolol hydrochloride; CS, chitosan; DL, drug loading capacity; Mt, montmorillonite; NPs, nanoparticles; EE, entrapment efficiency; PDI, polydispersity index.
