The absorption of light by polyethylene film subjected to extension and electron bombardment has been investigated on the wavelength interval 220–800 nm. It is shown that irradiation and illumination by a xenon lamp during extension reduce the stresses corresponding to the beginning of high-elastic deformation of the polyethylene. It is established that deformation and electron bombardment lead to an increase in the light absorption of the polyethylene film with absorption maxima at 245 and 290 nm. It is assumed that the nature of the effect is associated with reorientation of the macromolecule chains under the influence of mechanical stress and the appearance of allyl radicals-CH2-CH ≡ CH-ĊH-CH2-.
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Troitskii, O.A., Glazunov, P.Y. & Goryaev, V.M. The optico-deformation effect in irradiated polyethylene. Polymer Mechanics 8, 400–404 (1972). https://doi.org/10.1007/BF00856364
- Absorption Maximum
- Mechanical Stress