Investigation of electrical conductivity and electromagnetic interference shielding effectiveness of preferentially distributed conductive filler in highly flexible polymer blends nanocomposites

Motivated by the impact of electromagnetic radiation on electronic gadgets and living beings, herein we developed a light weight flexible EMI shielding material to meet the demands of consistently developing technology. In the present study, we utilized the concept of preferential distribution and double percolation to fabricate a conductive polymer composite that absorbs EM radiation. We employed EMA/EOC (50/50) wt% binary blend as the polymer matrix and MWCNT as the functional filler. With the addition of 3 wt% MWCNT, the composite demonstrated a shielding efficiency of −18.66 dB and with 15 wt% MWCNT, a total shielding efficiency of −34.06 dB was attained combined with good mechanical and thermal properties. We believe this work provides an insight in developing a scalable and affordable EMI shield finding its potential in both academic and industrial application.