Table 3 Assignments of signals in the C-4 region of the untreated and treated cellulose spectra
From: Cellulose modification by recyclable swelling solvents
Chemical shift (ppm) | Line shape | |
|---|---|---|
I α | 89.35 (0.03)a | Lorentz |
I ( α+ β) | 88.50 (0.10) | Lorentz |
Paracrystalline | 88.25 (0.03) | Gauss |
I β | 87.91 (0.15) | Lorentz |
Accessible fibril surfaces | 84.95 (0.14) | Gauss |
Inaccessible fibril surfaces | 83.43 (0.18) | Gauss |
Accessible fibril surfaces | 83.26 (0.06) | Gauss |
Cellulose oligomers | 81.68 (0.15) | Gauss |