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Description
The main goal in this paper is the production and characterization of conductive nanocomposites with PMMA – Poly (methyl methacrylate) matrix reinforced with graphene, MWCNTs (multi-walled carbon nanotubes) and a hybrid mixture of graphene, MWCNTs, and fullerenes. The nanocomposites were produced as thin films. The thin films are prepared using the solvent casting method. Carbon nanostructures are mixed with a PMMA solution using the ultra-sonication process.. The PMMA polymer is dissolved in chloroform. The solvent evaporates in approximately 72 hours.
The carbon based nanostructures (CNs) that are dispersed in different weight fractions (5% and 15%) are functionalized in two ways: by acid functionalization with HNO3 and using X-ray irradiation. For comparison, non-functionalized reinforcements were used as well. The effects of these functionalization methods on the graphene, MWCNTs and the hybrid mixture are evaluated through measurement of their conductive properties.
Physical characterization of the nanocomposites was performed by means of Raman spectroscopy, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The conductivity of the nanocomposite is measured with a four-point probe method. Chemical analysis of graphene and carbon nanotubes was performed with ICP-OES.
Key words: nanocomposites, PMMA, graphene, MWCNTs, PVDF.
| Scientific Sections | Development and environment |
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