Paracrystalline Structure of Polymer-Crystal Lattice Distortion Induced by Electron Irradiation
- 1 October 1970
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 41 (11) , 4276-4284
- https://doi.org/10.1063/1.1658457
Abstract
The melting temperature of polyethylene crystals decreases and the lattice constants (both a and b) and lattice distortion increase, but the macroscopic volume of the specimen does not change with electron irradiation. From these results a model of a deformed lattice structure with point defects produced by irradiation is proposed. Calculations indicate that the anisotropy of a polymer crystal (difference between the elastic modulus along the molecular axis and perpendicular to the axis) increases the range of the distortion in a crystal caused by a defect. The presence of lattice distortion in electron irradiated polymer single crystals produces observable features in the Moiré patterns obtained from the crystals.This publication has 12 references indexed in Scilit:
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