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Authors
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Bose, S. ; Bhattacharyya, A.R. ; Kulkarni, A. R. ; Pötschke, P.
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Title
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Electrical, rheological and morphological studies in co-continuous blends of polyamide6 and acrylonitrile-butadiene-styrene with multiwall carbon nanotubes prepared by melt blending
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Date
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01.01.2009
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Number
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15866
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Abstract
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Multiwall carbon nanotubes (MWNT) were incorporated in melt-mixed co-continuous blends of polyamide 6 (PA6) and acrylonitrilebutadienestyrene (ABS) using a conical twin-screw microcompounder. The state of dispersion of MWNT in the blends was assessed through AC electrical conductivity measurements and melt-rheological investigations. The electrical and rheological percolation threshold in PA6/ABS blends was not, vert, similar34 and not, vert, similar12 wt% MWNT, respectively. A unique reactive modifier (sodium salt of 6-amino hexanoic acid, NaAHA) was employed to facilitate network-like structure of MWNT and to confine them in a specific phase. This was achieved by establishing specific interactions with the delocalized p-electron clouds of MWNT and melt-interfacial reaction during melt-mixing. The electrical percolation threshold was significantly reduced in the blends (not, vert, similar0.25 wt%) in the presence of NaAHA modified MWNT and even coincided with the rheological percolation threshold. Significant refinement in the co-continuous structure was also observed in the presence of NaAHA modified MWNT.
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Publisher
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Composites Science and Technology
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Wikidata
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Citation
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Composites Science and Technology 69 (2009) 365-372
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DOI
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https://doi.org/10.1016/j.compscitech.2008.10.024
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