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Effects of postextrusion conditions on the morphology of foamed high-density polyethylene/polypropylene blends

✍ Scribed by C. Zepeda Sahagún; R. González Núñez; D. Rodrigue

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
708 KB
Volume
106
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The effects of postextrusion conditions (i.e., the draw ratio) were studied to control the cellular structure of extruded foams based on polymer blends. High‐density polyethylene and polypropylene were foamed with azodicarbonamide as a chemical blowing agent, zinc oxide as an accelerator, and Kraton D1102 as a compatibilizer. The deformation of the cellular structure and dispersed phase particles was measured with micrographs in both longitudinal and transversal directions to obtain a full three‐dimensional picture of the foam morphology. A simple model of the cellular structure is presented to predict cell deformation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007

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