A deformation mechanism for polyethylene spherulites has been proposed which is based on the affine transformation method. Individual crystal lamellae are taken as the orientation units within the spherulites and are allowed to rotate around the a ‐ and b ‐ axes of the crystal. Deductions based on this model and on previous models are compared with experimental results obtained with four kinds of polyethylene film. These results agree fairly well with the predictions of the present model and suggest that the plastic deformation of crystal lamellae by gliding along the (110) plane predominates over the untwisting of crystal lamellae at the initial stage of deformation.
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Oda et al. (1965) studied this question.
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