The Effects of Processing on the Photooxidation of Polymers

The photooxidation of polymers is of considerable practical significance since the rate of this process controls the useful service life of most polymers in outdoor applications. Low-density polyethylene in the form of film remains essentially unchanged for many years when stored at ambient temperatures indoors in the absence of direct sunlight. Out-of-doors, by contrast, even when stabilized with the most effective commercial UV stabilizers at present