Table 6.
The integrated molecular weight and distribution for P1 and P2.
| Sample (UPX-CE-Y) * | Total average of P1 and P2 | ||
|---|---|---|---|
| Mn | Mw | Mw/Mn | |
| UP2-O-0 | 4330 | 5250 | 1.21 |
| UP2-DI-0.34 | 4430 | 5450 | 1.23 |
| UP2-DI-0.54 | 4500 | 5570 | 1.24 |
| UP2-DI-0.74 | 4560 | 5710 | 1.25 |
| UP2-DI-0.94 | 4540 | 5630 | 1.24 |
| UP2-PEN-0.34 | 4380 | 5320 | 1.22 |
| UP2-PEN-0.54 | 4480 | 5600 | 1.25 |
| UP2-PEN-0.74 | 4540 | 5740 | 1.27 |
| UP2-PEN-0.94 | 4760 | 6090 | 1.28 |
| UP2-TRI-0.74 | 4480 | 5580 | 1.25 |
| UP2-BUT-0.74 | 4460 | 5490 | 1.23 |
* X: synthesis processes: 2—two-stage process; CE: chain extender: DI—di-PPG, TRI—tri-PPG, PEN—pentanediol, BUT—butanediol; Y: the molar ratio of chain extender to PPG 2000.