Table 1.

Characteristics of copolymers in comparison with PECH

Monomer pairsMonomer feed* ECH:TAL:DBUPolymer composition ECH:TALMn (g/mol)Tg§ (°C)
PECH1: 019,700−30
P(ECH-TALcom)1: 1.5: 0.751: 123,70030
PECH1:07,200−30
P(ECH-TALcom)1: 1.5: 11: 59,40070
P(ECH-TALbio)1: 0.5: 16: 17,900−11
  • 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.