Article (Scientific journals)
Extrusion foaming of poly(styrene-co-acrylonitrile)/ clay nanocomposites using supercritical CO2
Urbanczyk, Laetitia; Alexandre, Michaël; Detrembleur, Christophe et al.
2010In Macromolecular Materials and Engineering, 295 (10), p. 915
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Keywords :
green technology; supercritical carbon dioxide; foam; nanostructured materials; nanocomposite; clay
Abstract :
[en] Supercritical CO2 has been used as a blowing agent to foam poly(styrene-co-acrylonitrile)-based materials in a single screw extruder specially adapted to allow fluid injection. The cellular morphology depends on foaming temperature, more regular cells being obtained with decreasing extrusion temperature. In a second step, a natural and an organomodified nanoclay have been added for the purpose of imparting some flame resistance to the foamed material. The filler efficiency in reducing sample combustion rate appeared to be dependent on its delamination level inside the matrix and better results were obtained when the organomodified clay was first delaminated in the polymer in an efficient twin screw extruder using water assistance, prior to foaming in the single screw extruder.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Chemistry
Materials science & engineering
Author, co-author :
Urbanczyk, Laetitia;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Alexandre, Michaël ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Detrembleur, Christophe ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Christine  ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Calberg, Cédric ;  Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Industrial Chemistry
Language :
English
Title :
Extrusion foaming of poly(styrene-co-acrylonitrile)/ clay nanocomposites using supercritical CO2
Publication date :
12 October 2010
Journal title :
Macromolecular Materials and Engineering
ISSN :
1438-7492
eISSN :
1439-2054
Publisher :
John Wiley & Sons, United Kingdom
Volume :
295
Issue :
10
Pages :
915-
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
The "Région Wallonne" in the frame of the WINNOMAT program
Available on ORBi :
since 16 November 2010

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