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Effects of postextrusion conditions on the morphology of foamed high‐density polyethylene/polypropylene blends
Author(s) -
Zepeda Sahagún C.,
González Núñez R.,
Rodrigue D.
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24539
Subject(s) - polypropylene , materials science , composite material , morphology (biology) , polyethylene , blowing agent , high density polyethylene , polymer , deformation (meteorology) , polymer blend , copolymer , polyurethane , genetics , biology
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