Reference : Influence of nanoparticle-polymer interactions on the apparent migration behaviour of...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/109913
Influence of nanoparticle-polymer interactions on the apparent migration behaviour of carbon nanotubes in an immiscible polymer blend
English
Tao, Fangfang [Université catholique de Louvain (UCL) > > Bio- and Soft Matter, Institute of Condensed Matter and Nanosciences > >]
Nysten, Bernard [Université catholique de Louvain (UCL) > > Bio- and Soft Matter, Institute of Condensed Matter and Nanosciences > >]
Baudouin, Anne-Christine [Université catholique de Louvain (UCL) > > Bio- and Soft Matter, Institute of Condensed Matter and Nanosciences > >]
Thomassin, Jean-Michel [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Vuluga, Daniela [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Detrembleur, Christophe mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Bailly, Christian [Université catholique de Louvain (UCL) > > Bio- and Soft Matter, Institute of Condensed Matter and Nanosciences > >]
29-Sep-2011
Polymer
Elsevier Science
52
21
4798-4805
Yes (verified by ORBi)
International
0032-3861
Oxford
United Kingdom
[en] nanostructured material ; nanocomposite ; carbon nanotube
[en] We investigate the influence of nanoparticle–polymer interactions on the apparent migration behavior of multiwall carbon nanotubes (CNTs) in an immiscible polymer blend of ethylene-acrylate copolymer (EA) and polyamide 12 (PA). The polymer-CNTs interaction is tuned by using different surface modification strategies, comprising grafting and coating. Poly(methyl methacrylate) (PMMA) and polystyrene (PS) are chosen as surface modifiers. The nanocomposite materials are prepared by melt-blending polymer-modified-CNTs in EA and PA. Polymer-grafted-CNTs tend to concentrate at the PA/EA interface, even if predispersed in PA, as opposed to pristine CNTs, which stay inside PA under the same circumstances. This new behavior is consistent with the morphology of PA/EA/(PMMA or PS) ternary blends and suggest a dominance of interfacial thermodynamics on CNTs localization. If we use polymer-coated-CNTs instead, the behavior depends on molar mass of the coating polymer. For low molar mass, it is similar to that of pristine CNTs and indicates desorption of the coating, owing to the weak interaction with the CNTs surface. Interestingly, we observe that long PS chains do not desorb and can drive the CNTs to the interface of the PA/EA blend. Moreover, the influence of kinetics is clearly observed through the dependence of CNTs interfacial confinement on dispersed droplet size.
Center for Education and Research on Macromolecules (CERM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; The European Union in the frame of the HARCANA program
Researchers
http://hdl.handle.net/2268/109913
10.1016/j.polymer.2011.08.035

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