Abstract
This article reports the dynamic mechanical properties of polycarbonate/ethylene methyl acrylate (95/5 w/w) blend in the presence of a varying amount of multiwalled carbon nanotubes (MWCNT). Twin screw extruder was used for blending and rectangular specimens were prepared by injection molding. Dynamic mechanical properties of PC/EMA (95/5 wt/wt) blend was significantly affected by the incorporation of MWCNTs. Other parameters such as reinforcement coefficient ‘C’ and entanglement density of composites were also evaluated using DMA results for better understanding of the effectiveness of filler i.e. MWCNTs. The reinforcement coefficient gives information about the effect of MWCNTs on the moduli of composites. Lower is the value of coefficient (C) higher will be the effectiveness of filler as reinforcement in nanocomposites. The value of ‘C’ decreased from 1.39 (0.5 phr MWCNTs loading in PCE) to 0.73 (5 phr MWCNTs loading) which show increased effectiveness of MWCNTs at 5 phr loading with excellent properties. Further, Cole-Cole analysis was carried out to know about the phase behaviour of the nanocomposite. Thermal properties of PC/EMA nanocomposites were also studied in this paper.
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