Nanocomposites of Poly (etherimide) (PEI)/ multiwall carbon nanotubes (MWCNTs) modified by Polyphosphazene have been prepared by melt mixing process through co-rotating twin screw extruder. The influence of varied loadings of modified MWCNTs on the mechanical, heat deflection temperature (HDT) and morphological properties of the developed nanocomposites have been investigated. Dispersity of MWCNTs over PEI matrix has been evaluated by scanning electron microscopy (SEM). SEM studies demonstrate

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... hat there is uniform and homogeneous dispersion of MWCNTs over the entire PEI matrix. Mechanical tests depict that the nanocomposites have good mechanical properties as compared to virgin composite. The HDT of developed nanocomposites also increases with increase in nanofiller content in PEI matrix. Results also show that optimum HDT value has been achieved at 0.3 wt % loading of MWCNTs.