Synthesis and characterization of poly(urethane-co-amide) from CO2-based dicarbamate.
| Polymer | Composition of diamide diol/% HDHHA/BPTMSHHA | Dicarbamate | Urethanea/% | Ureaa/% | M n b × 104 | M w b × 104 | PDIb | |
|---|---|---|---|---|---|---|---|---|
| Feed | Founda | |||||||
| PUA-HDHHA-HDC | 100/0 | 100/0 | HDC | 70.4 | 29.6 | 4.13 | 6.24 | 1.51 |
| PUA-BPTMSHHA20-HDC | 80/20 | 75/25 | HDC | 62.7 | 38.3 | 2.96 | 4.85 | 1.64 |
| PUA-BPTMSHHA40-HDC | 60/40 | 52/48 | HDC | 63.7 | 36.3 | 2.87 | 5.34 | 1.81 |
| PUA-BPTMSHHA60-HDC | 40/60 | 37/63 | HDC | 66.0 | 34.0 | 2.52 | 4.12 | 1.63 |
| PUA-BPTMSHHA80-HDC | 20/80 | 17/83 | HDC | 74.1 | 25.9 | 2.31 | 4.01 | 1.74 |
| PUA-BPTMSHHA100-HDC | 0/100 | 0/100 | HDC | 70.7 | 29.3 | 2.74 | 4.16 | 1.52 |
| PUA-HDHHA-ODC | 100/0 | 100/0 | ODC | 79.4 | 20.6 | 3.85 | 5.51 | 1.43 |
| PUA-HDHHA-DDC | 100/0 | 100/0 | DDC | 80.6 | 19.4 | 3.56 | 6.23 | 1.75 |
a
Determined by 1H-NMR spectroscopy.
b
Measured by GPC.