Table 5. Molecular weight distributions of the precipitates (EOL) obtained by organosolv pretreatment of Liriodendron tulipifera at different temperatures
| Temp. (°C) | MWL | 120 | 130 | 140 | 150 | 160 | 170 | 180 |
| Mw (daltons) | 10,250 ± 52 | 5,050 ± 4 | 5,712 ± 56 | 6,780 ± 66 | 6,163 ± 84 | 4,356 ± 42 | 2,475 ± 24 | 1,953 ± 38 |
| Mn (daltons) | 4,384 ± 27 | 2,933 ± 30 | 2,945 ± 41 | 2,967 ± 41 | 2,783 ± 34 | 1,935 ± 27 | 1,476 ± 21 | 1,287 ± 35 |
| Polydispersity (Mw / Mn) | 2.34 ± 0.00 | 1.72 ± 0.02 | 1.94 ± 0.01 | 2.29 ± 0.01 | 2.21 ± 0.00 | 2.25 ± 0.01 | 1.68 ± 0.01 | 1.52 ± 0.01 |
EOL: ethanol organosolv lignin, MWL: milled wood lignin, Mw: weight-average molecular weight, Mn: number-average molecular weight.