Electron traps in polyethylene

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Abstract
Qualitative and quantitative results from previous studies of the thermoluminescence induced in polyethylene by irradiation are used in an attempt to deduce the main polyethylene electron traps. It is concluded that the most probable traps are the molecular chains themselves, the different degrees of molecular motion in different structural regions of polyethylene being responsible for the untrapping of the trapped electrons at different rates and hence the appearance of multiple glow peaks in the glow curve. An explanation is given for the correspondence between the activation energies of thermoluminescence, radiation induced electrical conductivity, and molecular chain motion (as measured by NMR) in polyethylene.

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