Table 2.
Physical properties of selected samples of PLA/cellulose spheres (see Table 1 for sample identification).
| Sample | Density (g/cm3) | Laser Diffraction | BET | ||
|---|---|---|---|---|---|
| Average Spheres Size (µm) | External Surface Area (cm2/g) | Global Surface Area (cm2/g) | |||
| Weighted by Volume | Weighted by Number | ||||
| PLA | 0.78 ± 0.03 | 126.2 ± 1.5 | 46.0 ± 1.9 | 525.0 ± 21.2 | not measured |
| PLA/UP | 0.91 ± 0.03 | 796.5 ± 1.3 | 633.4 ± 1.3 | 78.3 ± 0.4 | 10,600 |
| PLA/GUP | 0.69 ± 0.01 | 611.1 ± 1.4 | 447.2 ± 1.3 | 104.5 ± 0.7 | 11,400 |
| PLA/GUP-L61 | 0.77 ± 0.01 | 888.0 ± 1.4 | 648.4 ± 1.4 | 71.1 ± 0.2 | 9300 |
| PLA/MCC | 0.78 ± 0.00 | 130.9 ± 1.6 | 10.9 ± 1.6 | 579. 7 ± 11.3 | 5700 |
| PLA/MCC-L61 | 0.83 ± 0.02 | 641.7 ± 1.4 | 305.5 ± 1.9 | 101.0 ± 4.5 | 7400 |