6-Hydroperoxy-6-hexanelactam

The oxidative thermal stability is markedly affected by the concentration of both carboxylic and basic end groups. Carboxylic acid groups initiate the homolytic decomposition of 6-hydroperoxy-6-hexanelactam. Thus, alkoxyl and hydroxyl radicals are formed as intermediates. Eventually, the monoamide of adipic acid is formed. PAs with carboxylic end groups are oxidized in a similar way. The rate of oxidization increases with the content of carboxylic groups. ... 

B. L nskd. Thermo-oxidation of lactam-based polyamides with carboxylic end-groups Decomposition of 6-hydroperoxy-6-hexanelactam in the presence of carboxylic acids. Eur. Polym. J., 30(2) 197-204, February 1994. 

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