Table 3.
Mn and polydispersity index determinations for P1000 soda and Indulin AT Kraft lignins using alkaline size exclusion chromatography.
| Lignin/lignin fraction | Size exclusion chromatography | |
|---|---|---|
| Mn (Da) | Polydispersity index* | |
| Soda P1000 | 800 | 2.8 |
| F01 ethyl acetate | 610 | 2.1 |
| F02 MEK | 820 | 2.4 |
| F03 methanol soluble | 1130 | 2.9 |
| F04 acetone/water (4:1) | 1430 | 4.8 |
| F05 residual fraction | 1950 | 14.5 |
| Kraft Indulin AT | 840 | 4.1 |
| F01 ethyl acetate | 450 | 2.3 |
| F02 MEK | 570 | 2.5 |
| F03 methanol soluble | 910 | 3.1 |
| F04 acetone/water (4:1) | 1180 | 4.5 |
| F05 residual fraction | 1340 | 6.3 |
*Mw/Mn.