Main Article Content
Ferrite are conventional materials used for microwave absorption, however, they are expensive, constitute health hazard and pollutes the environment. For these reasons, there is need to explore safe and environmental friendly materials that can serve as radiation absorbers and be used in fabricating microwave devices. In the light of the above, this work was geared towards exploring the use of Unripe Plantain Husk (UPH) waste material for microwave absorber applications. The usability was determined by investigating the dielectric properties and attenuation of the UPH powder with respect to particle size and frequency of operation. The nano particle of the UPH was prepared aseptically by washing in water and acetone, sliced, sundried and grinded. The grinded UPH powder was then subjected to high energy milling using a SPEX 8000D shaker for 4 hours, 8 hours, 10 hours and 12 hours. The milled powder was then prepared into pellets by suppressing with hydraulic press and mold which were then used for characterization. Results from investigation and analysis showed that the milled powder was in nano dimension using transmission electron microscope (TEM). The UPH powder sizes were in the range of 63.35 nm, 52.05 nm, 42.86 nm and 21.43 nm for the 4, 8, 10 and 12 hours milling, respectively. The dielectric constants for the as produced, 4, 8, 10 and 12 hours milled powder were 2.96, 4.97, 5.66, 6.97 and 10.36, respectively. The highest magnitude for attenuation was calculated for the 12 hours milled powder with a value of 14.92 dB and the least attenuation was calculated for the as produced powder with a value of 6.72 dB. Based on the results obtained it is concluded that nano particles of UPH powder is good for microwave attenuation and is a potential for fabricating electronic components.
Ahmad AF, Aziz SA, Obaiys SJ, Zaid MH, Matori KA, Samikannu K, Aliyu US. Biodegradable Poly (lactic acid)/Poly (ethylene glycol) reinforced multi-walled carbon nanotube nanocomposite fabrication, characterization, properties and applications. Polymers. 2020;12(2): 427.
Esa F, Abbas Z, Fadhil OA, Yakubu A, Jusoh MA. Influence of nickel-zinc ratio on power loss of NixZn1-xFe2O4 using microstrip technique at microwave frequency. International Journal of Microwave and Optical Technology. 2015;10(2).
Yakubu A, Abbas Z, Esa F, Tohidi P. The effect of ZnO nanoparticle filler on the attenuation of ZnO/PCL nanocomposites using microstrip line at microwave frequency. International Polymer Processing. 2015;30(2):227-232.
Shadrach I, Banji A, Adebayo O. Nutraceutical potential of ripe and unripe plantain peels: A comparative study. Chemistry International. 2020;6(2):83- 90.
Abdalhadi DM, Abbas Z, Ahmad AF, Ibrahim NA. Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications. BioResources. 2017;12(2): 3976-91.
Abdulkarim YI, Deng L, Karaaslan M, Altıntaş O, Awl HN, Muhammadsharif FF, Liao C, Unal E, Luo H. Novel metamaterials-based hypersensitized liquid sensor integrating omega-shaped resonator with microstrip transmission line. Sensors. 2020;20(3):943.
Kang TG, Park JK, Kim BH, Lee JJ, Choi HH, Lee HJ, Yook JG. Microwave characterization of conducting polymer PEDOT: PSS film using a microstrip line for humidity sensor application. Measurement. 2019;137:272-7.
Enayatzadeh M, Mohammadi T, Fallah N. Influence of TiO2 nanoparticles loading on permeability and antifouling properties of nanocomposite polymeric membranes: Experimental and statistical analysis. Journal of Polymer Research. 2019;26(10): 240.
Pan C, Kou K, Jia Q, Zhang Y, Wu G, Ji T. Improved thermal conductivity and dielectric properties of hBN/PTFE composites via surface treatment by silane coupling agent. Composites Part B: Engineering. 2017;111:83-90.
Shamsuri AA, Awing MI. An initial investigation on microwaves reflection and transmission coefficients of oil palm empty fruit bunch biocomposites incorporated with nickel zinc ferrite. Journal of Materials Science Research and Reviews. 2020;42-9.
Klygach DS, Vakhitov MG, Suvorov PV, Zherebtsov DA, Trukhanov SV, Kozlovskiy AL, Zdorovets MV, Trukhanov AV. Magnetic and microwave properties of carbonyl iron in the high frequency range. Journal of Magnetism and Magnetic Materials. 2019;490:165493.
Pozar DM. Microwave Engineering. John Wiley & Sons; 2012.
Fernández Perdomo CP, Zabotto FL, Garcia D, Kiminami RH. Effect of the CoFe2O4 initial particle size when sintered by microwave on the microstructural, dielectric and magnetic properties. International Journal of Applied Ceramic Technology. 2019;16(5):2073- 84.
Wang Z, Chen H, Nian W, Fan J, Li Y, Wang X, Ma X. Grain boundary effect on dielectric properties of (Nd0. 5Nb0. 5) xTi1-xO2 ceramicsceamics. Journal of Alloys and Compounds. 2019;785:875-82.
Tekin HO, Sayyed MI, Altunsoy EE, Manici T. Shielding properties and effects of WO3 and PbO on mass attenuation coefficients by using MCNPX code. Dig J Nanomater Biostruct. 2017;12(3):861-7.