Table 1.
Characteristics of copolymers in comparison with PECH
| Monomer pairs | Monomer feed* ECH:TAL:DBU | Polymer composition† ECH:TAL | Mn‡ (g/mol) | Tg§ (°C) |
| PECH | 1: 0 | 19,700 | −30 | |
| P(ECH-TALcom) | 1: 1.5: 0.75 | 1: 1 | 23,700 | 30 |
| PECH | 1:0 | 7,200 | −30 | |
| P(ECH-TALcom) | 1: 1.5: 1 | 1: 5 | 9,400 | 70 |
| P(ECH-TALbio) | 1: 0.5: 1 | 6: 1 | 7,900 | −11 |
Polymer characteristics were measured for PETAL.
*
Determined by gravimetry.
†
Determined by 1H NMR spectroscopy.
‡
Number-average molecular weight determined by size exclusion chromatography in chloroform using light-scattering and differential refractometer detectors.
§
Thermal properties determined by differential scanning calorimetry.