Effect of Layer Multiplying Extrusion on the Morphology and Properties of PS/CNT Nanocomposites

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Multilayer coextrusion has been used to produce extruded films having up to several thousand alternating layers with individual layer thicknesses ranging from several micrometers to only a few nanometers. In this work, the multilayer coextrusion process was used to orient carbon nanotubes in a polymer matrix. After 5 wt. % multiwall carbon nanotubes (MWCNTs) were melt mixed with polystyrene, polymer nanocomposites with three to over 4000 layers were extruded using a multilayer coextrusion process. The effects of the number of film layers on morphology evolution – i.e., MWCNT orientation and dispersion – were studied using transmission electron microscopy and polarized raman spectroscopy. Changes in the mechanical and electrical properties with increasing film layers were correlated with the morphological changes

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Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2014: Graphene, CNTs, Particles, Films & Composites
Published: June 15, 2014
Pages: 396 - 399
Industry sector: Advanced Materials & Manufacturing
Topics: Advanced Materials for Engineering Applications, Composite Materials
ISBN: 978-1-4822-5826-4