Abstract: The effects of aggregated state of nylon-1010 on the chemical reactions(crosslinking anddegradation)during gamma irradiation and on the effect induced by heat treatment afterirradiation have been studied by using DSC, WAXD, ESR and dielectric spectra, and gelfraction measurement techniques. It is concluded that the chain crosslinking and scission ofirradiated nylon-1010 occur mainly in the amorphous region or crystal surface, and the non-crystalline region is also the main district where tbe post-crosslinking and post-degradationoccur.

Key words: nylon-1010, radiation crosslinking, radiation degradation, post-crosslinking, post-degradation, aggregated state