Table 1. Composition of the Synthesized PUDs.
| sample | PU hard block content, wt.% | soft segment Mn, g mol–1b | COOH Content, wt.% |
|---|---|---|---|
| HB50_SS650 | 50 | 650 | 1.52 |
| HB60_SS650 | 60 | 650 | 2.83 |
| HB70_SS650 | 70 | 650 | 4.15 |
| HB50_SS1000 | 50 | 1000 | 2.40 |
| HB60_SS1000 | 60 | 1000 | 3.57 |
| HB70_SS1000 | 70 | 1000 | 4.72 |
| HB50_SS2000 | 50 | 2000 | 3.29 |
| HB60_SS2000 | 60 | 2000 | 4.23 |
| HB70_SS2000 | 70 | 2000 | 5.22 |
| H12MDI_DMPAa | 100 | 6.84 |
a
Refers to the product of the 2:1 molar ratio reaction of H12MDI:DMPA.
b
Dispersity of the commercial PTMO diols used for the PU soft segment was about 2.0.