Table 2: Thermal properties of PA1–8.

Polymer IL catalysis polycondensation Conventional polycondensation [1] a b (°C) cChar yield (°C) Char yield PA 497 323 61 509 338 — PA 458 310 62 — — — PA 511 321 56 — — — PA 521 317 53 — — — PA 498 312 42 — — — PA 565 324 87 511 311 — PA 488 332 50 — — — PA 578 345 68 — — —

Temperature at which 10% weight loss was recorded by TGA at a heating rate of 10°C/min under nitrogen atmosphere. bGlass transition temperature recorded by DSC at a heating rate of 10°C/min under nitrogen atmosphere. cPercentage weight of material left after TGA analysis at maximum temperature 600°C under nitrogen atmosphere.