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2014•Advanced materials researchRequires access

Effects of Nanoclay and CO2 Content on Foaming Behaviors of PP/PS Alloys

Ming Yi Wang, Ru Min Zhu, Nan Qiao Zhou, Chul B. Park

Open publisher page 1 citations

Abstract

Microcellular foaming behavior of polypropylene/polystyrene (PP/PS) composites with or without the addition of nanoclay was compared in an extrusion foaming process by using supercritical CO2 as the foaming agent. The influence of CO2 content on foaming of the composites was investigated in the study. Our experiment results demonstrated that the introduction of nanoclay dramatically improved the foaming of the PP/PS blends with increased cell-population density and decreased cell size. With the increase of CO2 injected in the foaming process, cell-population density of the foam samples further increased.

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What this paper is about

Microcellular foaming behavior of polypropylene/polystyrene (PP/PS) composites with or without the addition of nanoclay was compared in an extrusion foaming process by using supercritical CO2 as the foaming agent. The influence of CO2 content on foaming of the composites was investigated in the study. Our experiment results demonstrated that the introduction of nanoclay dramatically improved the foaming of the PP/PS blends with increased cell-population density and decreased cell size. With the increase of CO2 injected in the foaming process, cell-population density of the foam samples further increased.

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Available abstract

Microcellular foaming behavior of polypropylene/polystyrene (PP/PS) composites with or without the addition of nanoclay was compared in an extrusion foaming process by using supercritical CO2 as the foaming agent. The influence of CO2 content on foaming of the composites was investigated in the study. Our experiment results demonstrated that the introduction of nanoclay dramatically improved the foaming of the PP/PS blends with increased cell-population density and decreased cell size. With the increase of CO2 injected in the foaming process, cell-population density of the foam samples further increased.

Key concepts: Polypropylene, Materials science, Extrusion, Foaming agent, Polystyrene, Supercritical fluid, Composite material, Blowing agent

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