With the help of the c-DTA® calculated DTA signal, endothermal and exothermal effects can be identified. In the following graph, the 2-step decomposition of a polyamide (PA) sample in a nitrogen atmosphere is presented. The melting peak, determined by c-DTA® to be at 226°C, identifies the sample as PA6. (measurement with TG 209 F1 Libra®)
It should be kept in mind when processing this material that the first mass loss step occurs already during melting; this is apparently the release of processing additives.