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All Journal Jurnal Sylva Lestari
Rohmat Ismail
Department of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Modification of Fast-Growing Wood into Magnetic Wood with Impregnation Method Using Fe3O4 Nanoparticles Esti Prihatini; Irma Wahyuningtyas; Istie Sekartining Rahayu; Rohmat Ismail
Jurnal Sylva Lestari Vol. 11 No. 2 (2023): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v11i2.651

Abstract

Fast-growing wood is rarely used by the community because of its low quality. This study aimed to modify the sengon (Falcataria moluccana) and jabon (Anthocephalus cadamba) into magnetic wood so they have new functions. In this study, the modification process was performed by impregnating five-level concentrations of Fe3O4 nanoparticles dissolved in two different dispersants, namely water and a mixture of furfuryl alcohol and water. The impregnation process is initiated by a vacuum of -0.5 bar, followed by a pressure of 1 bar for 120 min. The addition of furfuryl alcohol to the impregnation solution significantly increased the physical properties of magnetic wood. The presence of Fe3O4 in wood is also proven by the Fe-O groups observed from the FTIR spectrum analysis. The magnetic field strength also increased as the concentration level of Fe3O4 increased. Based on the results of this research, the best treatment was obtained on magnetic wood of sengon and jabon with furfuryl alcohol and Fe3O4 nanoparticles concentration of 7.5%. Keywords: Fast-growing wood, impregnation, magnetic wood, nanoparticles, nano Fe3O4
The Physical and Magnetic Properties of Sengon (Falcataria moluccana Miq.) Impregnated with Synthesized Magnetite Nanoparticles Saviska Luqyana Fadia; Istie Sekartining Rahayu; Deded Sarip Nawawi; Rohmat Ismail; Esti Prihatini
Jurnal Sylva Lestari Vol. 11 No. 3 (2023): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v11i3.761

Abstract

Sengon is one of the fast-growing wood that dominates Indonesian plantation forests and has been used as industrial raw material, fuel, and construction material. To enhance the physical characteristics of sengon wood, it needs technology of wood quality improvement, such as impregnation method by using Fe3O4 nanoparticles. Beside to enhance the quality of sengon wood, this technology can also expand the utilization of fast-growing wood. The presented research aims to examine the effects on physical and magnetic properties of sengon wood after being treated by magnetite nanoparticles impregnation. Magnetite nanoparticles were prepared by coprecipitation method with a precursor solution of iron ions mixture and weak base (NH4OH). The treatments of the magnetic wood consisted of 3 different concentrations that is untreated, 1% and 5% magnetite nanoparticles impregnation solution with demineralized water as a dispersant. Dimensional stability parameters, such as weight percentage growth, bulking impact, and effectiveness against swelling are increasing along the increase of concentration. Characterization tests such as SEM–EDX analysis showed the existence of Fe deposition in the wood cell membranes and pores of the wood. XRD analysis showed the appearance of magnetic peaks in the diffractogram in accordance with the decreased of crystallinity while the concentration increased and FTIR analysis showed Fe-O functional groups. Sengon wood magnetic was identified based on the VSM study, as a superparamagnetic components with mild magnetic characteristics.
Enhancing Dimensional Stability of Sengon Wood through Synergistic Citric Acid-Glycerol Cross-Linking and SiO2/TiO2 Nanocomposite Impregnation Sartika; Istie Sekartining Rahayu; Wayan Darmawan; Andi Detti Yunianti; Esti Prihatini; Gilang Dwi Laksono; Rohmat Ismail
Jurnal Sylva Lestari Vol. 14 No. 2 (2026): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i2.1372

Abstract

Sengon wood (Falcataria moluccana) is a fast-growing, low-quality species. In this research, nanoparticle-based impregnation was used to improve the quality and characteristics of sengon wood. SiO2 nanoparticles derived from bamboo leaves were synthesized using the sol-gel method, while TiO2 nanoparticles and SiO2/TiO2 nanocomposites were synthesized using the hydrothermal method. A mixture of citric acid, glycerol, and nanoparticles (SiO2, TiO2, and SiO2/TiO2 composite) was formulated as an impregnation solution at 1% concentration. Sengon wood impregnation was conducted using a vacuum-pressure method. The physical properties tested included weight percent gain (WPG), bulking effect (BE), anti-swelling efficiency (ASE), water uptake (WU), and density. The size of the synthesized nanoparticles was analyzed using a particle size analyzer (PSA). The impregnated sengon wood was characterized using Fourier transform infrared spectroscopy (FTIR) to identify functional groups and X-ray diffraction (XRD) to determine the degree of crystallinity. PSA analysis showed that the material used in the impregnation process is nanoscale (< 100 nm) and exhibits the best dispersion stability in the SiO2/TiO2 nanocomposite. Nanoparticle-impregnated sengon wood exhibited reduced WU and improved dimensional stability compared to untreated samples, especially in citric acid-glycerol and composite nanoparticle treatments. FTIR analysis identified the formation of ester bonds and the reduction of hydroxyl groups, and XRD analysis showed a decrease in crystallinity upon impregnation with nanoparticles and a citric acid-glycerol mixture. Overall, the use of citric acid-glycerol with the nanocomposite showed effectiveness in improving the dimensional stability and physical properties of sengon wood. Keywords: citric acid-glycerol, dimensional stability, sengon, SiO2/TiO2 nanocomposite, wood modification
Co-Authors Andi Detti Yunianti Deded Sarip Nawawi Esti Prihatini Gilang Dwi Laksono Irma Wahyuningtyas Istie Rahayu Sartika Saviska Luqyana Fadia Wayan Darmawan