Table 2.
The intrinsic viscosity, (η), the viscosity-average molecular weight, M v, and the average number of chain scissions (α) for the fragments prepared by hydrolysis of 1.0% chitosan with different HCl concentrations at 65°C for 5 h.
| Chitosan sample | (HCl) (M) | (η) (dL/g) | M v (kDa) | α |
|---|---|---|---|---|
| Original | — | 25.86 | 1965 | — |
| F11 | 0.10 | 20.20 | 1616 | 0.217 |
| F12 | 0.25 | 10.92 | 991.5 | 0.982 |
| F13 | 0.40 | 4.33 | 475.9 | 3.13 |
| F14 | 0.40 | 4.98 | 531.7 | 2.70 |
| F15 | 0.50 | 3.92 | 439.7 | 3.47 |
| F16 | 0.50 | 3.54 | 405.5 | 3.85 |
| F17 | 0.75 | 2.71 | 328.1 | 4.99 |
| F18 | 1.00 | 2.29 | 287.0 | 5.85 |
| F19 | 1.00 | 2.39 | 296.9 | 5.62 |