ORBi: Urbanczyk Laetitia - Extrusion foaming of poly(styrene-co-acrylonitrile)/ clay nanocomposites using supercritical CO2

Reference : Extrusion foaming of poly(styrene-co-acrylonitrile)/ clay nanocomposites using supercrit...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/75753

Title :	Extrusion foaming of poly(styrene-co-acrylonitrile)/ clay nanocomposites using supercritical CO2
Language :	English
Author, co-author :	Urbanczyk, Laetitia [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Alexandre, Michaël [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Detrembleur, Christophe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Jérôme, Christine [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
	Calberg, Cédric [University of Liège (ULg) > Department of Applied Chemistry > Laboratory of Industrial Chemistry > >]
Publication date :	12-Oct-2010
Journal title :	Macromolecular Materials and Engineering
Volume :	295
Issue/season :	10
Pages :	915-
Audience :	International
ISSN :	38-7492
Keywords :	[en] 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 units :	Center for Education and Research on Macromolecules (CERM)
Funders :	Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; The "Région Wallonne" in the frame of the WINNOMAT program
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/75753
DOI :	10.1002/mame.201000078
Other URL :	http://onlinelibrary.wiley.com/doi/10.1002/mame.201000078/pdf

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Restricted access	Urbanczyk L 2010 Macromol Mat Eng 295, 915.pdf		Publisher postprint	691.4 kB	Request copy
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