Measurment of The Effect of Sample Thickness on Absorption of Microwaves
Keywords:
Electromagnetic Microwave, COMSEL, Transmission coefficient, Reflection coefficient, Electric fieldAbstract
This study investigated the effect of sample thickness on microwave absorption for a material composed of polylactic acid (PLA) and oil palm empty fruit bunch (OPEFB) fiber. The sample was prepared with 30% oil palm fiber and 70% PLA polymer. A network analyzer (model N5227) was used to measure the sample's electrical permittivity, with the real part recorded as 2.845 and the imaginary part as 0.216. Additionally, the COMSOL simulation program was employed to examine the electric field distribution in the samples and calculate the transmission coefficient (S₂₁) and reflection coefficient (S₁₁) for electromagnetic waves in the microwave frequency range of 8-12 GHz. The transmission coefficient (S₂₁) values ranged from 0.729 to 0.950, while the reflection coefficient (S₁₁) values varied between 0.199 and 0.657 at a frequency of 10 GHz, expressed in decibels.
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N. Bagotia, “Electromagnetic (EM radiation) interference shielding material epicenter to carbon filler-based composite,” Elsevier, 2024, pp. 155–194. doi: https://doi.org/10.1016/B978-0-323-95387-0.00005-4.
J. Finnerty et al., “Effect of Mechanical Recycling on the Mechanical Properties of PLA-Based Natural Fiber-Reinforced Composites,” Journal of Composites Science, vol. 7, no. 4, p. 141, Apr. 2023, doi: https://doi.org/10.3390/jcs7040141.
K. Nirmal Kumar et al., “Mechanical and Thermal Properties of Bamboo Fiber–Reinforced PLA Polymer Composites: A Critical Study,” International Journal of Polymer Science, vol. 2022, pp. 1–15, Dec. 2022, doi: https://doi.org/10.1155/2022/1332157.
L. Suárez, Z. Ortega, F. Romero, R. Paz, and M. D. Marrero, “Influence of Giant Reed Fibers on Mechanical, Thermal, and Disintegration Behavior of Rotomolded PLA and PE Composites,” Journal of polymers and the environment, vol. 30, no. 11, pp. 4848–4862, Sep. 2022, doi: https://doi.org/10.1007/s10924-022-02542-x.
A. K. Sinha, K. R. Rao, V. K. Soni, R. Chandrakar, H. K. Sharma, and A. Kumar, “A Review on Mechanical Properties of Natural Fibre Reinforced PLA Composites,” Current Materials Science, vol. 15, Dec. 2021, doi: https://doi.org/10.2174/2666145415666211228163914.
Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications: BioResources,”@bioresjournal,2017.https://bioresources.cnr.ncsu.edu/resources/determining-the-complex-permittivity-of-oil-palm-empty-fruit-bunch-fibre-material-by-open-ended-coaxial-probe-technique-for-microwave-applications/ (accessed Nov. 11, 2024).
H. A. Dahad, S. F. Hasan, and A. H. Alwan, “Study the Effect of Different Percentages of Natural (Orange Peels and Date Seeds) and Industrial Materials (Carbon and Silica) on the Mechanical and Thermal Properties of Polymeric Reinforced Composites,” Al-Khwarizmi Engineering Journal, vol. 14, no. 4, pp. 16–23, Nov. 2018, doi: https://doi.org/10.22153/kej.2018.04.001.
N. Sunthrasakaran et al., “Factors that affects the dielectric properties of natural fibre reinforced hybrid biocomposite,” Indonesian Journal of Electrical Engineering and Computer Science, vol. 15, no. 2, p. 714, Aug. 2019, doi: https://doi.org/10.11591/ijeecs.v15.i2.pp714-722.
A. M. Khamis, Z. Abbas, A. F. Ahmad, R. Syahidah Azis, D. M. Abdalhadi, and E. E. Mensah, “Experimental and computational study on epoxy resin reinforced with micro‐sized OPEFB using rectangular waveguide and finite element method,” IET Microwaves, Antennas & Propagation, vol. 14, no. 8, pp. 752–758, May 2020, doi: https://doi.org/10.1049/iet-map.2019.0085.
Ebenezer Ekow Mensah, Z. Abbas, Raba’ah Syahidah Azis, Nor Azowa Ibrahim, and Ahmad Mamoun Khamis, “Complex Permittivity and Microwave Absorption Properties of OPEFB Fiber–Polycaprolactone Composites Filled with Recycled Hematite (α-Fe2O3) Nanoparticles,” Polymers, vol. 11, no. 5, pp. 918–918, May 2019, doi: https://doi.org/10.3390/polym11050918.
N. Tran, M. Y. Lee, W. H. Jeong, T. L. Phan, N. Q. Tuan, and B. W. Lee, “Thickness independent microwave absorption performance of La-doped BaFe12O19 and polyaniline composites,” Journal of Magnetism and Magnetic Materials, vol. 538, p. 168299, Nov. 2021, doi: https://doi.org/10.1016/j.jmmm.2021.168299.
M. Ma et al., “Design and synthesis of one-dimensional magnetic composites with Co nanoparticles encapsulated in carbon nanofibers for enhanced microwave absorption,” Journal of Colloid and Interface Science, vol. 652, pp. 680–691, Aug. 2023, doi: https://doi.org/10.1016/j.jcis.2023.08.031.
A. Šarolić and A. Matković, “Dielectric Permittivity Measurement Using Open-Ended Coaxial Probe—Modeling and Simulation Based on the Simple Capacitive-Load Model,” Sensors, vol. 22, no. 16, p. 6024, Aug. 2022, doi: https://doi.org/10.3390/s22166024.
E. E. Mensah, Z. Abbas, R. S. Azis, and A. M. Khamis, “Enhancement of Complex Permittivity and Attenuation Properties of Recycled Hematite (α-Fe2O3) Using Nanoparticles Prepared via Ball Milling Technique,” Materials, vol. 12, no. 10, p. 1696, May 2019, doi: https://doi.org/10.3390/ma12101696.
X. Wu, Y. Yao, Y. Fan, Z. Zhao, and J. Zhan, “Designing Co-based microwave absorber with high absorption and thin thickness based on structure regulations,” Journal of Materials Science: Materials in Electronics, vol. 32, no. 24, pp. 28648–28662, Oct. 2021, doi: https://doi.org/10.1007/s10854-021-07240-3.
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