Table 3.
Copolymerization of ε-caprolactone with δ-valerolactone using Sn(Oct)2 in bulk at 140 °C for 6 h.
| Polymer | (CL/VL) 1 | Mn 2 (g·mol−1) | PDI | Yield (%) | ∆Hm 3 (J·g−1) | Tm 3 (°C) |
|---|---|---|---|---|---|---|
| 22/78L | 22/78 | 10,300 | 1.7 | 95 | 44 | 30 |
| 69/31L | 69/31 | 13,200 | 1.6 | 62 | 36 | 31 |
| 82/18L | 82/18 | 12,000 | 1.7 | 95 | 60 | 33 |
| 82/18M | 82/18 | 25,000 | 1.7 | 90 | 71 | 36 |
| 82/18H | 82/18 | 40,000 | 1.5 | 89 | 81 | 38 |
1 Molar composition determined by 1H NMR; 2 Molecular weight determined by GPC, direct calibration with polystyrene standards (THF solvent); 3 Determined by DSC (standard deviation: 1 °C).