Effect of Sample Configuration on the Morphology of Foamed LDPE/PP Blends Injection Molded by a Gas Counterpressure Process

Effect of Sample Configuration on the Morphology of Foamed LDPE/PP Blends Injection Molded by a Gas Counterpressure Process

Blends of isotactic poly(propylene) and low‐density polyethylene with different composition ratios were prepared through direct melt compounding on a twin‐screw extruder. The specimens with various geometric configurations were injection‐molded using a gas counterpressure process, using blends to wh...

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Veröffentlicht in:Macromolecular materials and engineering 2007-06, Vol.292 (6), p.769-779
Hauptverfasser: Kotzev, Georgi, Djoumaliisky, Strashimir, Krasteva, Manya, Iliev, Mario, Pérez, Ernesto, Cerrada, Maria Luisa
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Cellular
DSC
Exact sciences and technology
foamed polyolefin blends
Forms of application and semi-finished materials
morphology
Polymer industry, paints, wood
SEM
Technology of polymers
WAXS
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container_end_page 779
container_issue 6
container_start_page 769
container_title Macromolecular materials and engineering
container_volume 292
creator Kotzev, Georgi
Djoumaliisky, Strashimir
Krasteva, Manya
Iliev, Mario
Pérez, Ernesto
Cerrada, Maria Luisa
description Blends of isotactic poly(propylene) and low‐density polyethylene with different composition ratios were prepared through direct melt compounding on a twin‐screw extruder. The specimens with various geometric configurations were injection‐molded using a gas counterpressure process, using blends to which 0.5 wt.‐% of a blowing agent was added. The influence of blend composition and specimen geometry on the structure and morphology of the samples was investigated by SEM and WAXS. The thermal behavior of the blends was analyzed by DSC. It was found that the morphology of each region depended on the composition ratio and specimen geometry.
doi_str_mv 10.1002/mame.200700030
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source Wiley Online Library Journals
subjects Applied sciences
Cellular
DSC
Exact sciences and technology
foamed polyolefin blends
Forms of application and semi-finished materials
morphology
Polymer industry, paints, wood
SEM
Technology of polymers
WAXS
title Effect of Sample Configuration on the Morphology of Foamed LDPE/PP Blends Injection Molded by a Gas Counterpressure Process
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