Table 1: Kinetic characteristics of different polyesters.

PBT-N2PTT-N2PET-N2
β β β

Zone 15648270−0.0152752655673439−0.0224484335695483−0.169594477
10669278−0.01128027310693450−0.02245844410710494−0.148593488
15674295−0.00529228915718429−0.02544142315717480−0.174599474
20682281−0.01028327620726429−0.02544142320725475−0.182601469

Zone 25771253−0.0162582465799310−0.0273263045901459−0.031480452
10793273−0.01227626610822370−0.02238136310972470−0.029490462
15800295−0.00829428815834379−0.02138937215949443−0.036470435
20807266−0.01327025920848290−0.03130928320973430−0.042463422

PBT-AIRPTT-AIRPET-AIR
β β β

Zone 15652304−0.0313182985657328−0.0453523235701397−0.168509391
10663390−0.01539538510671397−0.03341339110706463−0.151564457
15670382−0.01738837615679411−0.03042640515719446−0.157552440
20676407−0.01241040220686389−0.03740838320725402−0.167517396

Zone 25767184−0.0362051785763274−0.0402982685901309−0.029328302
10790207−0.02121620010787300−0.03632129310905391−0.019401383
15805196−0.02721219015803296−0.03631828915928432−0.013436424
20808179−0.04220517220823280−0.03930527320950382−0.021393374

β: heating rate (°C/min), : peak degradation temperature (°C), : activation energy (kJ/mol), : change in entropy (kJ/mol), : change in free energy (kJ/mol), : change in enthalpy (kJ/mol).