Preparation And Characterization Of PANI / GNPs Nanocomposites For Flexible Wearable Textile Antenna Application

Omar, Muhammad Azim (2019) Preparation And Characterization Of PANI / GNPs Nanocomposites For Flexible Wearable Textile Antenna Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Previously, the conductive patch of antenna is made from copper, which are inflexible, expensive, multi-fading phenomena, bulky, environmental sensitive and difficult to manufacture. Miracle nanotechnology of graphene owing to their extraordinary electrical conductivity and superior strength than metal, but flexible, has allowed them to be a potential candidate replacing uncompromising copper metallic. However, the main drawback of graphene is lack of energy band gap which close down many electronic device potential applications. Hence, in this research, GNPs is incorporated with polyaniline (PANI) conductive polymers. Wearable fabrics as flexible body signal receiver type antennas, are overwhelmed research topics for body centric communication in an industrial revolution 4.0 (IR4.0) era. Wearable textile antenna applications are expanding quickly, especially for mobile computing, tracking navigation and public safety. This study is to evaluate the potential of novel formulation of graphene nanoplatelets / polyaniline (GNPs/PANI) conductive nanocomposites for the new generation of flexible wearable textile antenna. GNPs/PANI nanocomposites solution has been synthesized by aniline polymerization in an acidic medium. The effects on GNPs loading (0.25 wt %, 0.50 wt %, 0.75 wt% and 1.00 wt %) on antenna radiating properties for GNP/PANI-textile nanocomposites has been characterized and evaluated, using standard morphological, physical and electrical characterization method. The combination of GNPs and PANI is perfecting each other, enhancing the existing electrical conductivity properties, while open up other potential characteristics, especially for robust wearable antenna development. The simulated and measured results showed that the proposed wearable textile antenna has constant gain which is 4.1809 dB, return loss at -13.154 dB and radiation pattern after the antenna is operated at 10.36 GHz. From this research, new materials formulation of GNPs/PANI textile nanocomposites and related fundamental understanding for such application, and standard methodological approach for smart clothing wearable antenna fabrication was established.

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