Dear Manel Haddar

Yes, it is important since both of canning Calorimetry and Fourier Transform Infrared Spectroscopy are utilizing to investigate corresponding changes in the microstructures of materials, as to quantitatively characterize the crystalline degree of samples with different thermal ageing.

Best regards

Dear all, ageing imparts usually changes on the chemical structure leading to changes in the physical properties. Such change are characterized by the birth of new chemical bonds and oxygenated groups, chains scission and crosslinking. The mentioned two techniques are to detect such changes, but they are not the best one, you do NMR and SEC/GPC for powerful and precise analysis. My Regards