Table 4.
Effects of enzymatic pretreatments in crystallinity and physical properties of the films obtained after mechanical fibrillation
| Crystallinity (%) | Transparency (%) | Density (g cm−3) | Bekk smoothness (s) | ||
|---|---|---|---|---|---|
| Upper face | Lower face | Upper face | |||
| R | 89.1 ± 0.1 | 27.8 ± 0.9 | 28.0 ± 0.1 | 0.8 ± 0.1 | 15 ± 4 |
| Ck | 88.5 ± 0.5 | 35.9 ± 3.7 | 36.0 ± 3.7 | 0.8 ± 0.1 | 10 ± 1 |
| C9 | 90.3 ± 0.2 | 54.3 ± 0.4 | 52.9 ± 0.2 | 1.0 ± 0.1 | 29 ± 5 |
| C50 | 91.4 ± 0.1 | 83.4 ± 0.5 | 83.2 ± 1.1 | 1.1 ± 0.0 | 46 ± 6 |
| CF | 91.0 ± 0.3 | 74.9 ± 0.7 | 73.8 ± 0.5 | 1.1 ± 0.1 | 53 ± 2 |
| Cll | 91.4 ± 0.2 | 75.7 ± 0.9 | 74.7 ± 0.8 | 1.1 ± 0.0 | 34 ± 2 |
| Cmix | 92.4 ± 0.2 | 86.1 ± 0.5 | 85.9 ± 1.5 | 0.9 ± 0.0 | 50 ± 6 |
| Sk | 89.0 ± 0.2 | 52.9 ± 1.8 | 51.5 ± 2.3 | 0.8 ± 0.1 | 11 ± 2 |
| S | 90.5 ± 0.5 | 60.0 ± 0.4 | 60.9 ± 0.3 | 0.9 ± 0.0 | 10 ± 2 |
| SCmix | 92.5 ± 0.1 | 85.6 ± 0.5 | 85.3 ± 0.5 | 1.1 ± 0.1 | 53 ± 1 |
| L_Tempo | 89.8 ± 0.1 | 38.9 ± 3.2 | 37.8 ± 1.8 | 0.9 ± 0.1 | 14 ± 3 |
| Com | 81.1 ± 0.2 | 66.2 ± 0.7 | 66.7 ± 0.4 | 1.0 ± 0.0 | 19 ± 3 |
R (initial refined pulp), Ck (cellulase control treatment), C9 (Cel9B), C50 (Sertec20 cellulase), CF (Fibercare cellulase), Cll (Celluclast cellulase), Cmix (cellulase mixture consisting in Fibercare and Celluclast), Sk (LPMO control treatment), S (LPMO), SCmix (LPMO and Cmix), L_Tempo (Laccase_Tempo treatment) and Com (commercial NFC)