Table 1.
Composition and Polydispersity Indices (PDI) of Different Microspheric Formulations.
| Formulations | IAP:OP:EAP | IAP Composition (w/v) | EAP Composition (w/v) | PDI | Tapped Density (g/cm3) |
|---|---|---|---|---|---|
| Plain-1 | 0.5:5:25 | — | 1% PVA | 5.16±0.021 | 0.36±0.12 |
| PEI-1 | 1.25% PEI | 3.85±0.014 | 0.21±0.03 | ||
| PEI-2 | 2.5% PEI | 1.51±0.006 | 0.15±0.02 | ||
| PEI-3 | 5% PEI | 1.47±0.016 | 0.1±0.003 | ||
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| Plain-2 | — | 2% PVA | 3.3560.035 | 0.45±0.11 | |
| PEI-4 | 1.25% PEI | 2.98±0.003 | 0.25±0.02 | ||
| PEI-5 | 2.5% PEI | 1.49±0.003 | 0.2±0.014 | ||
| PEI-6 | 5% PEI | 4.82±0.664 | 0.146±0.012 | ||
IAP, Internal Aqueous Phase; OP, Organic Phase; EAP, External Aqueous Phase; PEI, Polyethyleneimine 25 kDa; PVA, Polyvinyl Alcohol; PDI, Polydispersity Index