Thermogravimetric analysis of some crosslinked acrylamide copolymers and ion exchangers

摘要

Thermal degradation of some acrylamide copolymers, crosslinked with divinylbenzene (DVB) and N,N′-methylenebisacryla-mide (MBAA) was examined by thermogravimetric analysis (TGA) in the range of temperatures between 20 and 900℃. The thermal behaviour of some functional polymers based on these crosslinked copolymers, containing primary amine groups or/and carboxylic groups were compared. The decomposition of the crosslinked copolymers depends on the copolymer nature, the crosslinking agent and the functional groups attached to these copolymers. The number of thermooxidative degradation steps, the weight loss and the overall kinetic parameters of degradation show the complex mechanisms which characterize these thermal reactions.