Table 2. Properties of the Pulps Obtained from the Fractionation of E. globulus Wood Chips in 50 wt % GVL Solution at 180 °C, for 90–150 min with L:W = 3 or 4 L/kg in the Oil-Bath Digester.
| Solid Fraction (Pulp) |
||||||
|---|---|---|---|---|---|---|
| samplea | yieldb (% odw) | cellulosec (% odp) | C5d (% odp) | C6e (% odp) | lignin (% odp) | viscosity (mL/g) |
| 4–90 | 50.7 | 87.5 | 6.6 | 1.6 | 4.4 | 846 |
| 4–120 | 48.8 | 88.5 | 6.2 | 1.6 | 3.7 | 769 |
| 4–150 | 47.1 | 90.4 | 5.3 | 1.5 | 2.8 | 562 |
| 3–90 | 48.9 | 88.1 | 5.9 | 1.7 | 4.3 | 773 |
| 3–120 | 47.0 | 89.1 | 5.3 | 1.6 | 4.1 | 597 |
| 3–150 | 45.6 | 89.8 | 5.6 | 1.2 | 3.4 | 493 |
a
The sample is named as fractionation L:W (in L/kg)-fractionation time (in minutes).
b
Percent on oven-dried wood.
c
Percent on oven-dried pulp.
d
C5 hemicelluloses (xylan and arabinan).
e
C6 hemicelluloses (galactan, mannan, and rhamnan).