Abstract
The creep behavior of polycarbonate, polycaproamide, and polystyrene samples upon simultaneous and successive irradiation by fast electrons and optical-frequency radiation (photo- and radiation impact) was studied. The action of visible light in conjunction with electrons or immediately after electron irradiation leads to a dramatic increase in the creep rate. The absorbed doses of the onset of polymer degradation upon photo- and radiation impact are about an order of magnitude lower than those for electron irradiation alone. Macroradicals and stable radiolytic products absorbing light in a longer wavelength spectral region as compared with the initial polymers are assumed to be responsible for the photo- and radiation creep and durability of the polymers.
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