2.4. Thermal stability study
Thermal Gravimetric Analysis (TGA) of neat PLA, extruded PLA and CaCO3-PLA biocomposites was
performed in nitrogen atmosphere condition by Mettler Toledo TGA model 1. Samples were heated from 50oC to
500oC with a heating rate of 10 oC/min. The onset temperature of degradation (Tonset), peak degradation temperature
(Td), and the end temperature of degradation (Tend) were calculated from the TGA curve and reported.