Abstract
High pressure crystallized linear polyethylene was treated with fuming nitric acid and of both samples treated and untreated the X-ray wide angle line widths of 18 hkl-reflections were analysed. The three axes and the orientation of the mean shape ellipsoid and thegki-values of the paracrystalline distortions were determined. The crystallite size perpendicular to the chain direction is up to 1650 A and parallel to the chain direction higher than 5000 A and is not be changed significantly by HNO3-treatment.
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