Search results for "Graphene and fullerene"

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Advanced ultra-high molecular weight polyethylene/antioxidant-functionalized carbon nanotubes nanocomposites with improved thermo-oxidative resistance

2015

Multiwalled carbon nanotubes (CNTs) functionalized with hindered phenol moieties are dispersed in ultra-high molecular weight polyethylene (UHMWPE), and the stabilizing action of the antioxidant (AO) functionalized CNTs (AO-f-CNTs) is studied through a combination of rheological and spectroscopic (FT-IR) analyses. The effectiveness of two alternative compounding methods, namely hot compaction (HC) and melt mixing (MM), is compared. The combination of high temperature and mechanical stress experienced during MM brings about noticeable degradation phenomena of the matrix already in the course of the compounding step. Differently, the milder conditions of the HC process preserve the stability …

Materials sciencePolymers and PlasticsCarbon nanotubelaw.inventionnanotubesCoatings and Filmschemistry.chemical_compoundlawgraphene and fullerenesMaterials Chemistrydegradation graphene and fullerenes nanotubes polyolefinsComposite materialpolyolefindegradationchemistry.chemical_classificationUltra-high-molecular-weight polyethyleneNanocompositeChemistry (all)Metals and AlloysGeneral ChemistryPolymerPolyethyleneGraftingdegradation; graphene and fullerenes; nanotubes; polyolefins; Chemistry (all); Surfaces Coatings and Films; Polymers and Plastics; Materials Chemistry; 2506; Metals and AlloysSurfaces Coatings and FilmsSurfaceschemistryCompoundinggraphene and fullerenenanotube2506Dispersion (chemistry)polyolefins
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Effect of the nanotube aspect ratio and surface functionalization on the morphology and properties of multiwalled carbon nanotube polyamide-based fib…

2013

In this study, the effect of the carbon nanotube (CNT) aspect ratio and surface functionalization on the mechanical behavior and morphological changes of polyamide (PA)-based fibers was investigated. Composites were prepared by the melt blending of CNTs with PA, and at a later time, the fibers were prepared by melt spinning and cold drawing. A reinforcement effect was noticed for all of the CNTs samples, and the increase in the mechanical properties and dimensional stability was more pronounced for highly oriented filaments. When the elongational flow was increased, the orientation of CNTs along the fiber direction was observed, but the nanotube alignment was much more difficult for CNTs wi…

MorphologyNanotubeMaterials sciencePolymers and PlasticsScanning electron microscopePolyamidesGraphene and fullereneGeneral ChemistryCarbon nanotubeSurfaces Coatings and Filmslaw.inventionNanotubelawTransmission electron microscopyPolyamideMaterials ChemistrySurface modificationFiberMelt spinningComposite materialMechanical propertieJournal of Applied Polymer Science
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