The Effect of Synthetic and Commercial Nano-Magnetite on the Electromagnetic Absorbance Behavior of Magnetic Wood

Authors

  • Istie Sekartining Rahayu Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Aqila Alya Nabila Sabarna Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Irma Wahyuningtyas Department of Forest Product Processing, Faculty of Forest Product Technology, Samarinda State Agricultural Polytechnic
  • Rohmat Ismail Department of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University
  • Esti Prihatini Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Wayan Darmawan Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Gilang Dwi Laksono Department of Forest Products, Faculty of Forestry and Environment, IPB University
  • Irsan Alipraja Department of Forest Products, Faculty of Forestry and Environment, IPB University

DOI:

https://doi.org/10.23960/jsl.v12i2.889

Abstract

Magnetic wood with good electromagnetic wave absorption properties was prepared by comparing synthetic and commercial nano-magnetite (Fe3O4-NP) as sengon (Falcataria moluccana) wood impregnation solution. The co-precipitation method produced a synthetic nano-magnetite with NH4OH as a weak base precursor. Meanwhile, the commercial one was purchased from a supplier. Three levels of nano-magnetite concentration (1%, 2.5%, and 5%) were dispersed in deionized water. The impregnation process was done by applying a vacuum of 0.5 bar for 120 minutes, followed by a pressure of 1 bar for 120 minutes. The results showed that the commercial nano-magnetite caused more improvements in weight percent gain, density, and hardness than the synthetic nano-magnetic, although they were insignificantly different. There was also a reduction in brightness with the overall color change being categorized into other colors because the color became darker with increasing nano-magnetite concentration in both woods. The absorbance capacity of the synthetic nano-magnetite-treated wood was larger than the commercial nano-magnetite-treated wood. This synthetic nano-magnetite-treated wood had been optimally treated at a 5% concentration, making it suitable for use as electromagnetic wave shielding material because it can absorb almost 100% electromagnetic waves.

Keywords: Fe3O4, impregnation, nano-magnetite, sengon wood, shielding materials

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Published

09-04-2024

How to Cite

Rahayu, I. S., Sabarna, A. A. N., Wahyuningtyas, I., Ismail, R., Prihatini, E., Darmawan, W., Laksono, G. D., & Alipraja, I. (2024). The Effect of Synthetic and Commercial Nano-Magnetite on the Electromagnetic Absorbance Behavior of Magnetic Wood. Jurnal Sylva Lestari, 12(2), 366–384. https://doi.org/10.23960/jsl.v12i2.889

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