Eswaraiah et al. Nanoscale Research Letters 2011, 6:137 http://www.nanoscalereslett.com/content/6/1/137 Page 9 of 11 Figure 9 DC electrical conductivity of the MNTs/PVDF and f-MWCNTs/PVDF composites. Figure 10 EMI shielding effectiveness of MNTs/PVDF, MNTs/f-MWCNTs/PVDF and f-MWCNTs/PVDF composites.