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Proceedings Paper

Plastic deformation of crystalline polymer blends studied by x-ray techniques
Author(s): Z. Bartczak; Andrzej Galeski
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Paper Abstract

Plastic deformation of several blends including PE/PS, PE/SEBS/PS, PA6/PP-g-AA and iPP/HOCP, and resulting textures were studied using X- ray pole figures technique. The primary deformation mode chosen for this study was plane-strain compression in channel-die. Deformation in this mode is not accompanied by cavitation, which allows high strain deformation and helps to identify the deformation mechanisms active. It was found that the basic mechanisms of plastic deformation are crystallographic slips within lamellae supported by plastic shear and flow of amorphous component (intralamellar sliding). The mechanism identified are basically the same as those active in deformation of plain polymers. In phase separated blends interfaces between components do not cavitate and preserve their integrity in either uncompatibilzed or compatibilized blends. The inclusions of the second component influence the plastic deformation of the crystalline matrix by local modification of the stress field in their surroundings. That modification depends on the ratio of compliances of the inclusions and the matrix at the temperature of deformation.

Paper Details

Date Published: 25 September 2000
PDF: 11 pages
Proc. SPIE 4240, X-Ray Investigations of Polymer Structures II, (25 September 2000); doi: 10.1117/12.401839
Show Author Affiliations
Z. Bartczak, Ctr. of Molecular and Macromolecular Studies (Poland)
Andrzej Galeski, Ctr. of Molecular and Macromolecular Studies (Poland)


Published in SPIE Proceedings Vol. 4240:
X-Ray Investigations of Polymer Structures II
Andrzej Wlochowicz, Editor(s)

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