supercritical carbon dioxide; nanocomposite; foam; electromagnetic interferences (EMI) shielding material
Abstract :
[en] Sorption and diffusion of supercritical carbon dioxide (scCO2) into polycarbonate (PC) nanocomposites loaded with 0, 1 and 2 wt% of multi-walled carbon nanotubes (MWNTs) have been investigated. After determination of the saturation equilibrium, the samples have been saturated with scCO2 to ensure a partial foaming with a density gradient from the surface to the center of the samples and the morphology of the porous materials has been analysed by SEM. The gradient materials were very advantageous for EMI shielding since the foamed structure at the surface had low dielectric constant and limited the reflection of the EM signal while the presence of highly conductive solid in the middle ensured a high absorption of the electromagnetic radiation.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Monnereau, Laure; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Urbanczyk, Laetitia; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Thomassin, Jean-Michel ; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Pardoen, Thomas; Université catholique de Louvain (UCL), Research Center in Architectured and Composite Materials (ARCOMAT)
Bailly, Christian; Université catholique de Louvain (UCL), Research Center in Architectured and Composite Materials (ARCOMAT)
Huynen, Isabelle; Université catholique de Louvain (UCL), Research Center in Architectured and Composite Materials (ARCOMAT)
Jérôme, Christine ; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Detrembleur, Christophe ; University of Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Gradient foaming of polycarbonate/carbon nanotube based nanocomposites with supercritical carbon dioxide and their EMI shielding performances
Publication date :
24 February 2015
Journal title :
Polymer
ISSN :
0032-3861
eISSN :
1873-2291
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
59
Pages :
117-123
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique The "Région Wallonne" in the frame of the MULTIMASEC program
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