Table 2.
Physical characteristics of CPE.
| Measured value | Avicel CE 15 | Avicel DG | Avicel HFE 102 |
|---|---|---|---|
| Fw [g·s−1] | NA | NA | 11.2 ± 0.16 |
| θr [°] | NA | NA | 30.67 ± 0.72 |
| θs [°] | 39.00 ± 0.81 | 40.67 ± 0.47 | 37.33 ± 0.47 |
| HR | 1.24 | 1.33 | 1.24 |
| CI | 19.46 | 24.98 | 19.19 |
| DB [g·mL−1] | 0.50 ± 0.17 | 0.38 ± 0.26 | 0.41 ± 0.25 |
| DT [g·mL−1] | 0.62 ± 0.28 | 0.50 ± 0.37 | 0.51 ± 0.31 |
| DP [g·mL−1] | 1.40 ± 0.11 | 2.86 ± 0.12 | 1.58 ± 0.41 |
| P [%] | 64.3 | 86.7 | 74.1 |
| MPS [µm] | 111.8 | 123.0 | 145.0 |
| D 10 [µm] | 21.55 | 22.55 | 41.93 |
| D 50 [µm] | 99.73 | 74.38 | 132.16 |
| D 90 [µm] | 221.06 | 276.8 | 267.37 |
| SSA [m2·g−1] | 0.5 | 1.2 | 0.6 |
| M [%] | 4.66 ± 0.13 | 3.35 ± 0.10 | 3.28 ± 0.04 |
| UF3 [%] | 98 ± 0.01 | 92 ± 0.00 | 95 ± 0.02 |
| UF24 [%] | 26 ± 0.08 | 65 ± 0.05 | 89 ± 0.43 |
| pH | 5.52 | 7.19 | 6.99 |
Fw: flow through the orifice; θr: angle of repose (tg α); θs: angle of slide; HR: Hausner ratio; CI: compressibility index; DB: bulk density; DT: tapped density; DP: pycnometric density; P: porosity; MPS: mean particle size; D10, D50, and D90: diameters at which 10, 50, and 90% of the sample's mass are comprised of particles with a diameter less than this value; SSA: specific surface area; M: moisture content; UF3: undissolved fraction after 3 min; UF24: undissolved fraction after 24 hours; pH (2% solution); N/A: not applicable.