Table 2.
Power-law model parameters and shape fidelity factor of different concentrations of HPMC E5 and HPMC E15.
| Formulation | Concentration (% w/v) |
Flow Behavior Index | Consistency Coefficient (Pa∙sn) |
Shape Fidelity Factor | Diameter of Printed Filament (mm) |
|---|---|---|---|---|---|
| E5 | 10 | 0.75 | 2.37 | 1.07 ± 0.01 | 1.15 ± 0.17 |
| 12.5 | 0.72 | 5.09 | 1.06 ± 0.02 | 0.97 ± 0.02 | |
| 15 | 0.76 | 7.31 | 1.07 ± 0.03 | 0.81 ± 0.02 | |
| 20 | 0.66 | 34.07 | 1.03 ± 0.02 | 0.55 ± 0.03 | |
| E15 | 10 | 0.78 | 18.69 | 1.05 ± 0.01 | 0.59 ± 0.07 |
| 12.5 | 0.67 | 55.91 | 1.03 ± 0.01 | 0.56 ± 0.03 | |
| 15 | NA | NA | NA | NA | |
| 20 | NA | NA | NA | NA |
Note: NA (not applicable) means the printing dispersions cannot be extruded through the nozzle.