Abstract

Changes in the supermolecular structure of low-density polyethylene films were investigated by X-ray analysis with low and wide angle diffraction patterns. The films underwent preliminary orientation at temperature of 100, 85, 60 and 20° and were subjected to shrinkage at the same temperatures. The changes in supermolecular structure (SMS) were the result of gradual extension at 20° along the texture axis. A model of the changes in SMS has been proposed.

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