Functionalized-CNT Polymer Composite for Microwave and Electromagnetic Shielding

Muhammed Kallumottakkal; Mousa I Hussein; Yousef Haik; Tarik Bin Abdul Latef

doi:10.3390/polym13223907

Functionalized-CNT Polymer Composite for Microwave and Electromagnetic Shielding

Polymers (Basel). 2021 Nov 12;13(22):3907. doi: 10.3390/polym13223907.

Authors

Muhammed Kallumottakkal¹, Mousa I Hussein¹, Yousef Haik², Tarik Bin Abdul Latef³

Affiliations

¹ Department of Electrical Engineering, United Arab Emirates University, Al Ain 15551, United Arab Emirates.
² Department of Mechanical and Industrial Engineering, Texas A & M University-Kingsville, Kingsville, TX 78363, USA.
³ Electrical Engineering Department, University of Malaya, Kuala Lumpur 50603, Malaysia.

Abstract

In this research work, we studied the microwave properties of multi-wall carbon nanotube (MWCNT) surface functionalized with metallic oxides composites. Three different concentrations (5%, 10%, and 20%) of metallic oxides were used, namely cobalt, iron, and cobalt ferrite. The surface-decorated CNTS were impregnated into polyurethane (PU) matrix. The surface-decorated MWCNTs and the MWCNTs-PU composites were characterized using electron microscopy. The dielectric properties of the samples are studied using an open-ended coaxial probe technique in a wide frequency range of (5-50 GHz). The metallic oxide-decorated surface MWCNTs-PU composites demonstrated different microwave-frequency absorption characteristics depending on the concentration of the metallic oxides.

Keywords: dielectric; functionalized CNT; microwave absorption; reflection loss.