Microcellular Foaming of (Nano)Biocomposites by Continuous Extrusion Assisted by Supercritical CO2

Nicolas Lemoigne; Martial Sauceau; Margot Chauvet; Jean Charles Benezet; Jacques Fages

Microcellular Foaming of (Nano)Biocomposites by Continuous Extrusion Assisted by Supercritical CO2

Nicolas Lemoigne ¹ Martial Sauceau ² Margot Chauvet ² Jean Charles Benezet ¹ Jacques Fages ²

1 C2MA - Centre des Matériaux des Mines d'Alès

2 RAPSODEE - Centre de recherche d'Albi en génie des procédés des solides divisés, de l'énergie et de l'environnement

Abstract : In many industrial fields, the development of porous and light polymer composite structures is of great interest. Continuous extrusion assisted by supercritical carbon dioxide (sc-CO2) is an emerging technology for the microcellular foaming of polymer and composite materials. Thanks to its specific physical properties, sc-CO2 can act as a removable plasticizer and physical blowing agent during processing. Unlike chemical foaming processes, sc-CO2 assisted extrusion avoids leaving residues in the final products. It also allows a rapid mixing and dissolution of sc-CO2 in the polymer melt as compared to batch processes. In this chapter, the foaming of biopolymer matrices by sc-CO2 assisted extrusion is reviewed and extended to the development of (nano)biocomposites foams loaded with micro/nano-sized (in)organic fillers.

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Book sections

Domain :

Engineering Sciences [physics]

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https://hal-mines-albi.archives-ouvertes.fr/hal-01869583
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Submitted on : Thursday, November 8, 2018 - 11:24:30 AM
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