Electrospun carbon fibers embedded with core–shell TiC@TiO nanostructures and their epoxy composites for potential EMI shielding in the Ku band

Deeraj, BDS and Shebin, KJ and Bose, S and Sampath, S and Joseph, K (2022) Electrospun carbon fibers embedded with core–shell TiC@TiO nanostructures and their epoxy composites for potential EMI shielding in the Ku band. In: Nano-Structures and Nano-Objects, 32 .

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Abstract

The demand for developing efficient shielding materials to safeguard electronic instruments from unwanted electromagnetic waves and their associated interference is growing. The present work reports on one such effective material, electrospun TiC@TiO 2 core–shell carbon fiber mats, synthesized by directly electrospinning nano titanium carbide embedded polyacrylonitrile fibers. The morphology of prepared mats and carbonized mats were observed using electron microscopy and the results are presented. The XRD, Raman spectra, XPS and EMI shielding characteristics of these carbon fiber samples were tested and are also presented. The results show the surface oxidation of TiC to TiO 2 during the conversation of the PAN fiber to carbon fiber. The electromagnetic interference shielding effectiveness of these TiC@TiO 2 carbon fiber mats was tested in the Ku band (12–18 GHz) and an excellent shielding effectiveness of ∼-33.31 dB for a single layer (thickness: 0.21 mm) was observed. Further, these mats were impregnated in an epoxy matrix and electrospun carbon fiber reinforced epoxy composites were prepared. The ease of preparation, enhanced mechanical performance and excellent shielding capability makes these TiC@TiO 2 embedded carbon fiber mats and their epoxy composites promising structural EMI shielding materials.

Item Type:	Journal Article
Publication:	Nano-Structures and Nano-Objects
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to the Elsevier B.V.
Keywords:	Electrospinning; Electrospun carbon fiber; EMI shielding effectiveness; Epoxy composites; Titanium carbide; Titanium dioxide
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	06 Oct 2022 12:12
Last Modified:	06 Oct 2022 12:12
URI:	https://eprints.iisc.ac.in/id/eprint/77224

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