Solubility of additives in polyethylene and aliphatic polyamides. The effect of oxidation

The solubility of diphenylamine, phenyl benzoate and diphenyl methane in high-density polyethylene and various polyamides has been studied as a function of oxidation and of sample annealing.

Oxidative destruction of topological structures forming the non-polar sorption centers and accumulation of new-formed polar groups, participating in sorption of polar compounds, result in complicated dependencies of solubility upon oxidation, in some cases showing minima.