Forced assembly by multilayer coextrusion to create oriented graphene reinforced polymer nanocomposites
TypeArticles dans des revues avec comité de lecture
A potential advantage of platelet-like nanofillers as nanocomposite reinforcements is the possibility of achieving two-dimensional stiffening through planar orientation of the platelets. The ability to achieve improved properties through in-plane orientation of the platelets is a challenge and, here, we present the first results of using forced assembly to orient graphene nanoplatelets in poly(methyl methacrylate)/ polystyrene (PMMA/PS) and PMMA/PMMA multilayer films produced through multilayer coextrusion. The films exhibited a multilayer structure made of alternating layers of polymer and polymer containing graphene as evidenced by electron microscopy. Significant single layer reinforcement of 118% at a concentration of 2 wt % graphene was achieveddhigher than previously reported reinforcement for randomly dispersed graphene. The large reinforcement is attributed to the planar orientation of the graphene in the individual polymer layers. Anisotropy of the stiffening was also observed and attributed to imperfect planar orientation of the graphene lateral to the extrusion flow.
Showing items related by title, author, creator and subject.
RASSELET, Damien; RUELLAN, Alexandre; GUINAULT, Alain; MIQUELARD-GARNIER, Guillaume; SOLLOGOUB, Cyrille; FAYOLLE, Bruno (ELSEVIER, 2014)The thermo-oxidative degradation of polylactide (PLA) films was studied between 70 and 150 C. It was shown that the oxidative degradation of PLA leads to a random chain cission responsible for a reduction of the molar ...
Confinement effect in PC/MXD6 multilayer films: Impact of the microlayered structure on water and gas barrier properties MESSIN, Tiphaine; FOLLAIN, Nadège; GUINAULT, Alain; MIQUELARD-GARNIER, Guillaume; SOLLOGOUB, Cyrille; DELPOUVE, Nicolas; GAUCHER, Valérie; MARAIS, Stéphane (Elsevier, 2017)The transport properties were specifically investigated from water and gas permeation kinetics, and the corresponding permeation parameters were determined. The confinement effect of MXD6 in the multilayer structure was ...
BOUFARGUINE, Majdi; GUINAULT, Alain; MIQUELARD-GARNIER, Guillaume; SOLLOGOUB, Cyrille (WILEY, 2013)Blending poly(lactic acid) (PLA) with a small amount of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV; 10 wt%) using a custom multilayer co-extrusion process increases both ductility and gas barrier properties of ...
Breakup behavior of nanolayers in polymeric multilayer systems — Creation of nanosheets and nanodroplets FENG, Jingxing; BAER, Eric; OLAH, Andrew; SOLLOGOUB, Cyrille; MIQUELARD-GARNIER, Guillaume; GUINAULT, Alain; BIRONEAU, Adrien; ZHANG, Ziyou (Elsevier, 2018)Multilayer films comprising polystyrene (PS)/polymethyl methalcrylate (PMMA) and PS/polycaprolatone (PCL) alternating nanolayers with varied layer thickness were fabricated by multilayer coextrusion. The nanolayers breakup ...
Dispersion of carbon nanotubes in polypropylene via multilayer coextrusion: Influence on the mechanical properties MIQUELARD-GARNIER, Guillaume; GUINAULT, Alain; FROMONTEIL, D; DELALANDE, S; SOLLOGOUB, Cyrille (ELSEVIER, 2013)Multilayer coextrusion was used to disperse Carbon Nanotubes (CNT) in polypropylene (PP). The dilution of commercially available masterbatches using a twin-screw extruder was first applied to produce several formulations, ...