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Molecular weights and polydispersity index of the lignin samples
| Pretreatment severity | Mn (Da) | Mw (Da) | Polydispersity (Mw/Mn) |
|---|---|---|---|
| Untreated | 19,070 | 22,680 | 1.189 |
| S = 3.6 | 63,120 | 63,560 | 1.007 |
| S = 3.9 | 102,800 | 103,200 | 1.004 |
| S = 4.2 | 82,100 | 82,440 | 1.004 |
