Polymethyl metha acrylate (PMMA), which can form transparent layer with very good dielectric properties, is used for preparation of composites with multi walled carbon nanotubes (MWCNTs). Such polymer composites are widely used in electronic industry. Character of such MWCNTs based polymeric composite materials can be very much tuned through use of MWCNTs of different morphology and dimensions. Here, composites of PMMA have been prepared using MWCNTs of three different dimensions in order to establish correlation between dimensions of MWCNTs and electrical behavior of the composites. Solution based synthesis of the PMMA based MWCNTs (MWCNTs/PMMA) composites have been characterized by UV-Visible and Fourier transform infra-red spectroscopy. To investigate the electrical character of the prepared composites, resistance and capacitance values were measured by LCR meter. In order to establish correlation between dimensions of the MWCNTs and electrical character of MWCNTs/PMMA composites, percolation phenomena was studied for all three types of composites. Interestingly, it was observed that nor length neither diameter of the tubes independently control the electrical character.

Establishment of correlation between MWCNTs dimensions and electrical character of MWCNTs based polymer composites

253rd National Meeting (2017)

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