Table II.
Summary of Parameters from the Fitted GAB Equation
| Powder | W m | CG | K | W g |
|---|---|---|---|---|
| MCC | 0.029 | 17 | 0.80 | 0.050 |
| CMC | 0.071 | 16 | 0.82 | 0.100 |
| HPMC | 0.029 | 3.6 | 0.80 | 0.035 |
| PVP | 0.120 | 1.9 | 0.85 | 0.300 |
| Corn starch | 0.089 | 18 | 0.60 | 0.110 |
| Potato starch | 0.087 | 37 | 0.72 | 0.170 |
MCC microcrystalline cellulose, CMC carboxymethyl cellulose, HPMC hydroxypropyl methylcellulose, PVP polyvinylpyrrolidone, W m mass of water sorbed equivalent to monomolecular coverage, K and CG are constant parameters of the GAB equation, W g point at which the isotherm curves rapidly upward