Dispersion of carbon nanotubes in polypropylene via multilayer coextrusion: Influence on the mechanical properties
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, which were then mixed with PP using a multilayer coextrusion device to obtain...
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| Veröffentlicht in: | Polymer (Guilford) 2013-07, Vol.54 (16), p.4290-4297 |
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| creator | Miquelard-Garnier, G. Guinault, A. Fromonteil, D. Delalande, S. Sollogoub, C. |
| description | 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, which were then mixed with PP using a multilayer coextrusion device to obtain films or pellets with CNT concentrations between 0.1 and 1%wt. The influence of the specific mechanical energy (SME) during the dilution step, of the addition of a compatibilizer, and of the multilayer tool on the CNT dispersion within the matrix was highlighted. The effect of the dispersion on the thermomechanical properties of the resulting materials was studied. We showed notably that films containing 0.2%wt CNT, 1%wt of PPgAm, prepared at high SME presented a Young's modulus increase of 25–30% without significant decrease in the elongation at break. These results, using low amounts of CNT and industrially available devices, may show a new path for producing nanocomposites.
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| doi_str_mv | 10.1016/j.polymer.2013.06.007 |
| format | Article |
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The dilution of commercially available masterbatches using a twin-screw extruder was first applied to produce several formulations, which were then mixed with PP using a multilayer coextrusion device to obtain films or pellets with CNT concentrations between 0.1 and 1%wt. The influence of the specific mechanical energy (SME) during the dilution step, of the addition of a compatibilizer, and of the multilayer tool on the CNT dispersion within the matrix was highlighted. The effect of the dispersion on the thermomechanical properties of the resulting materials was studied. We showed notably that films containing 0.2%wt CNT, 1%wt of PPgAm, prepared at high SME presented a Young's modulus increase of 25–30% without significant decrease in the elongation at break. These results, using low amounts of CNT and industrially available devices, may show a new path for producing nanocomposites.
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Carbon nanotube carbon nanotubes Composites energy Engineering Sciences Exact sciences and technology Forms of application and semi-finished materials Materials mechanical properties Mechanics modulus of elasticity Multilayer coextrusion Nanocomposite nanocomposites pellets Polymer industry, paints, wood polypropylenes Technology of polymers |
| title | Dispersion of carbon nanotubes in polypropylene via multilayer coextrusion: Influence on the mechanical properties |
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