Table 1.
Amounts of components used for the preparation of RPU foams.
| Lignin Substitution Ratio (%) | Lignin-pMDI Premix (g) | Polyol Premix (g) | NCO Index | ||||
|---|---|---|---|---|---|---|---|
| Lignin | pMDI | Silicone Oil * | Polyol R-23-015 | Dabco 33-LV * | 1,1,1,3,3-Pentafluorobutane * | ||
| 0 | 0 | 51.5 | 0 | 50 | 0 | 0 | 157 |
| 10 | 5 | 51.5 | 0.25 | 45 | 0.025 | 0.45 | 156 |
| 20 | 10 | 51.5 | 0.50 | 40 | 0.050 | 0.90 | 154 |
| 30 | 15 | 51.5 | 0.75 | 35 | 0.075 | 1.35 | 153 |
| 40 | 20 | 51.5 | 1.00 | 30 | 0.100 | 1.80 | 152 |
Note: The amounts of silicone oil, Dabco® 33-LV, and 1,1,1,3,3-Pentafluorobutane are 5%, 0.5%, and 9% in terms of lignin weight, respectively.