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Journal : PERENNIAL

Pengingkatan Kerapatan Kayu Jabon Melalui Impregnasi Furfuril Alkohol dan Nano-SiO2: The Improvement of Jabon Wood Density Through The Furfuryl Alcohol and Nano-SiO2 Wahyuningtyas, Irma; Dirna, Fitria Cita
PERENNIAL Vol 21 No 1 (2025): Vol. 21 No. 1, April 2025
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v21i1.43187

Abstract

Jabon (Anthocephalus cadamba Miq.) is a fast-growing wood that is widely utilized by the society as a construction material and furniture making. This study aimed to increase the density of jabon wood through a vacuum pressure impregnation method. Furfuryl alcohol (FA) and nano-SiO2 with three concentrations (0.5%, 0.75%, dan 1%) were used as impregnation additives, with control and FA without nanoparticles as comparisons. Impregnation was initiated with a vacuum (0.5 bar) for an hour, followed by pressure (2.5 bar) for 2 hours. The significant results on the physical properties of jabon wood including weight percent gain (WPG), bulking effect (BE), and density showed the success of the modification treatment through the FA and nano-SiO2 impregnation process with various concentrations, which the wood density increased from 0.60 g/cm3 to 0.94 g/cm3. The composition of FA and 1% nano-SiO2 solution was the best treatment to obtain the highest density in modified jabon wood.
Keterbasahan Kayu Jati Cepat Tumbuh Termodifikasi Kimia dan Panas: Wettability of Chemically and Thermally Modified of Fast-Growing Teak Wood Hanifah, Nisrina Putri; Wahyuningtyas, Irma; Kutana, Agung Nugrawan; Dirna, Fitria Cita
PERENNIAL Vol 21 No 1 (2025): Vol. 21 No. 1, April 2025
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v21i1.43479

Abstract

Fast-growing species are chemically and thermally modified to improve quality. These changes affect wood’s chemical composition and surface characteristics. This study aims to analyze the durability of fast-growing teak wood that has been chemically and thermally modified. Chemical modification was carried out by impregnation using citric acid and polyethylene glycol (PEG) 400, while heat modification carried out at 150 °C. The wettability of wood was tested by measuring the contact angle with six types of liquid, aquades, toluene, glycerin, methanol, alkyd, and acrylic paint. The results showed that chemical modification treatment significantly improved the wettability of wood compared to control and heat treatment. Wood treated with citric acid and PEG 400 exhibits a lower contact angle, indicating increased liquid absorbency. Conversely, heat treatment increased the contact angle value making the wood more hydrophobic. Alkyd showed better wettability than acrylic paints, possibly due to their lower viscosity values. This suggests that chemical modification more effectively improves wood coating adhesion.