TABLE 3.
Experimental results of hydroxyl concentration of glycolysate.
| Experimental design-1 | L9 orthogonal array | OHV (mgKOH/g) | Result | |||
|---|---|---|---|---|---|---|
| Material | Catalyst | Solvent | Test_1 | Test_2 | S/N | |
| O1-L9-1 | Hard PU | NaOH | C2H6O2 | 388.72 | 399.44 | 51.91 |
| O1-L9-2 | Hard PU | Ca(OH)2 | C4H10O3 | 296.63 | 294.73 | 49.42 |
| O1-L9-3 | Hard PU | (CH3COO)2Zn | C3H8O3 | 80.57 | 64.83 | 36.94 |
| O1-L9-4 | Soft PU | NaOH | C4H10O3 | 296.30 | 275.20 | 49.08 |
| O1-L9-5 | Soft PU | Ca(OH)2 | C3H8O3 | 5.78 | 12.51 | 16.64 |
| O1-L9-6 | Soft PU | (CH3COO)2Zn | C2H6O2 | 289.77 | 299.39 | 49.38 |
| O1-L9-7 | PET | NaOH | C3H8O3 | 48.52 | 43.67 | 33.20 |
| O1-L9-8 | PET | Ca(OH)2 | C2H6O2 | 175.36 | 178.28 | 44.95 |
| O1-L9-9 | PET | (CH3COO)2Zn | C4H10O3 | 241.63 | 238.65 | 47.61 |
Note: OHV means the hydroxyl values of the glycolysate.