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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu dan Teknologi Hasil Hutan Sains Natural: Journal of Biology and Chemistry Jurnal Pengelolaan Laboratorium Pendidikan Jurnal Ilmu dan Teknologi Kayu Tropis Journal of Sylva Indonesiana ULIN: Jurnal Hutan Tropis International Journal of Recent Technology and Applied Science (IJORTAS) Journal of Engineering, Technology, and Applied Science (JETAS) Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Indonesian Journal of Laboratory Jurnal Pusat Inovasi Masyarakat Jurnal Sylva Lestari Jurnal Ilmu Kehutanan Jurnal Ilmu Kehutanan
Istie Rahayu
Department Of Forest Products, Faculty Of Forestry, Bogor Agricultural University (IPB), Bogor (16680)
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences

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Karakteristik Kayu Cepat Tumbuh Terimpregnasi Monoetilen Glikol dan Nanopartikel SiO 2 terhadap Serangan Jamur Pelapuk Kayu Rahayu, Istie; Saputri, Egydia; Priadi, Trisna; Wahyuningtyas, Irma; Prihatini, Esti; Ismail, Rohmat
Jurnal Ilmu Kehutanan Vol 18 No 2 (2024): September
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v18i2.12288

Abstract

Jabon (Anthocephalus cadamba) and Sengon (Falcataria moluccana) were fast-growing wood species widely planted in the community forest. Both kinds of wood have low durability even though they can potentially be used in the carpentry material industry. Therefore, this research aimed to analyze the vacuum-pressure impregnation effect using monoethylene glycol (C2H6O2) or MEG and silica dioxide (SiO2) nanoparticles on wood resistance to fungal decay. The results showed that impregnation treatment with MEG and SiO2 nanoparticles significantly improved the durability of Jabon and Sengon against fungal attacks. Furthermore, MEGSiO2 with 24-hour polymerization had a better impact on durability compared to both the control and MEGSiO2 with 12-hour polymerization. The 24-hour polymerization using 1% SiO2 nanoparticles resulted in the lowest weight loss for Jabon (5.86% ) and Sengon (5.21%). In addition, the variation of SiO2 nanoparticle concentration did not significantly affect the weight loss and durability of Jabon and Sengon against fungal decay.
The Effect of Synthetic and Commercial Nano-Magnetite on the Electromagnetic Absorbance Behavior of Magnetic Wood Rahayu, Istie Sekartining; Sabarna, Aqila Alya Nabila; Wahyuningtyas, Irma; Ismail, Rohmat; Prihatini, Esti; Darmawan, Wayan; Laksono, Gilang Dwi; Alipraja, Irsan
Jurnal Sylva Lestari Vol. 12 No. 2 (2024): 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.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
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Salam Min Rohmatillah Akhrudin Maddu Alifah Fidela Alifah Syahfitri Arinana Arinana Deded Sarip Nawawi Dodi Nandika Dwi Laksono, Gilang Efrida Basri Esti Prihatin Esti Prihatini Esti Prihatini Esti Prihatini Esti Prihatini Gérardin, Philippe Gilang Dwi Laksono I Ketut Nuridja Pandit I Nyoman Jaya Wistara I Wayan Darmawan Ina RITA Irma Wahyuningtyas Irsan ALIPRAJA Ismail, Rohmat Khairunissa, Dhiya Khoerudin, Riki Laksono, Gilang Dwi Lina Karlinasari Martha, Resa Mersi Kurniati Muflihati Muflihati Muslimatul Rahmi Naresworo Nugroho Pipin Supinah Prihatini, Esti Remy Marchal Riadhi, Mohamad Rizki Rita Kartika Sari Rizky Ramdhani Rohmat Ismail Rohmat Ismail Rynaldo Davinsy, Rynaldo Sabarna, Aqila Alya Nabila Saputri, Egy Dia Saputri, Egydia Satriyo H Wicaksono Saviska Luqyana Fadia Sofiaturizkiyah, Nurul Tobing, Gabriel Trisna PRIADI Vera Junita Sitanggang Wahyuningtyas, Irma Wasrin Syafii Wayan Darmawan Widyana LUZA Yoki Putra YOLANDA Zahrial COTO