Collect. Czech. Chem. Commun. 1991, 56, 1461-1476

Infrared spectroscopic study of the products of thermal degradation of polyamides in inert atmosphere

Miroslav Svobodaa, Bohdan Schneiderb and Jan Štokrb

a Forensic Institute of Public Security, 182 00 Prague 8
b Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6


Infrared spectra were measured of condensates generated by heating polyamide-6, polyamide-12, polyamide-11, polyamide-8 and polyamide-6,6 in inert atmosphere at 300, 350, 400, 500, and 600°C for various time. The products of thermal degradation were characterized by infrared spectroscopy. It was found that the thermal history of polyamide degradation can be detected from infrared spectra.