SynopsisThe photooxidative degradation of the films of an atactic polymer effected with a mercury discharge tube was studied. The formation of carbonyl and hydroxyl groups in the polymer was followed by infrared spectroscopy. The conversion curves of both oxidation products are exponential. The following energies of activation for formation of car-bony1 and hydroxyl groups were found: E = o = 14.7 kcal./mole, E = 15.9 kcal./mole. The biradical termination of RO;: radicals is proved. A reaction mechanism of formation of carbonyl and hydroxyl groups is suggested.
One of the reasons for purification of low‐pressure polymerization products is the assumed degradation effects of retained catalysts. Degree of degradation was determined from the change in viscosity number. Effects of catalysts on active sights and deactivation were noted along with degradation in the presence of air and oxygen in addition to determining, the effect of antioxidants. Individual components of the catalyst may have the ability to intensify the effect of any antioxidant and affect the rate of degradation where catalyst influence was better defined in the presence of oxygen.
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