Abstract
The photostabilization of poly-(2,6-dimethyl-1,4-phenylene oxide) film in air, using Cd(II) O, O′-diisopropyl dithiophosphate as a stabilizer, in the temperature range 313–363 K with a light intensity flux of 8·7 × 10 −9 einstein s −1 cm −2, was investigated. The course of stabilization has been determined by means of light scattering, potassium ferrioxalate actinometry and gel formation. The extent of stabilization was also followed by IR and UV spectroscopy and by monitoring the formation of carbonyl and hydroxyl groups. These results have been used to support the proposed mechanism of photostabilization.
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