Abstract
An evaluation is made of the liquid phase oxidation of polyphenoxyphenylenemethylenes, containing different amounts of ethoxyl groups, as a function of solvent type and of the excess of acid catalyst present. Two hydroperoxide types form in these polymers due to the methylene group oxidation, one between aromatic rings, the other at the end of the ethoxymethyl groups. The solvent type affects the amount of both the types of hydroperoxide groups formed as a result of the liquid-phase oxidation. DTA under non-adiabatic conditions has been used to assess the relative amounts of each of the hydroperoxide groups present.
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