Table 1.
Polymer/Oligomer | Hydroxy Propyl Methyl Cellulose (HPMC E3) | Hydroxy Propyl Methyl Cellulose (HPMC E5) | Polyvinyl Pyrrolidone (PVP 30) | Polyvinyl Acetate Phthalate (PVAP) | Hydroxy Propyl β Cyclodextrin (HPBCD) |
---|---|---|---|---|---|
Commercial Product used | Methocel™ E3 Premium LV | Methocel™ E5 Premium LV | Kollidon® 30 | Phthalavin® | Kleptose® HPB |
Chemistry | Cellulose based | Cellulose based | Pyrrolidone based | Phthalate based | Glucose based |
Monomer Structure | |||||
Architecture | Long-chain Linear Polymer | Long-chain Linear Polymer | Long-chain Linear Polymer | Long-chain Linear Polymer | Short-chain Cyclic Oligomer |
Molecular Weight | ~20,000 | ~28,700 | ~50,000 | ~60,700 | 1399 |
Viscosity | 2.4–3.6 (mPa.s: 2% w/v in water at 20 °C) | 4.0–6.0 (mPa.s: 2% w/v in water at 20 °C) | 5.5–8.5 (mPa.s: 10% w/v in water at 20 °C) | 7–11 (mPa.s: in water at 25 °C) | <1.5 (mPa.s: 10% w/v in water at 25 °C) |