Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10425077 | Composites Science and Technology | 2012 | 6 Pages |
Abstract
Composites of Kraton-D® 1102 BT (a styrene-butadiene-styrene block copolymer) and multi-walled carbon nanotubes (MWCNTs) were prepared by melt mixing. The composites were characterized by electrical conductivity measurements (Coleman's method), mechanical properties (DMA and stress-strain tests), thermal stability (thermogravimetry) and morphology of dispersion (SEM). Finally, the resulting composites were compared with those made by the solution casting method. The results showed a strong influence of the preparation methodology on the final properties of the composites due to changes in morphology. Composites prepared by casting showed a higher electrical conductivity than extruded ones; the composites with 6Â wt.% of MWCNT prepared by extrusion presented conductivity of the same order of magnitude as the composite with 1Â wt.% of MWCNT prepared by casting - 10â3 to 10â4Â SÂ cmâ1. However, the extruded samples presented better mechanical properties than the casting ones.
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Authors
L.G. Pedroni, J.R. Araujo, M.I. Felisberti, A.F. Nogueira,