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All Journal Pro-Life Chemistry Indonesian Journal of Chemical Research PERENNIAL Science Education and Application Journal Community Development Journal: Jurnal Pengabdian Masyarakat Salus Cultura: Jurnal Pembangunan Manusia dan Kebudayaan Jurnal Wanita dan Keluarga Keris: Journal of Community Engagement
Fitria Cita Dirna
Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Journal : PERENNIAL

 1 
The Pengaruh Perlakuan Impregnasi dengan MEG dan PEG Terhadap Warna Kayu Jati Solomon Dirna, Fitria Cita
PERENNIAL Vol 20 No 2 (2024): Vol. 20 No. 2, Oktober 2024
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v20i2.37287

Abstract

The color of wood is an important indicator that can be used for assessing the quality of wood, particularly for decorative product applications. This research aims to analyze the results of color changes in Solomon teak wood with impregnation modification (0.5 bar of vacuum for 60 minutes and 2.5 bar pressure for 120 minutes) using the impregnants monoethylene glycol (MEG) and polyethylene glycol (PEG). The Solomon teak wood used measures 2 cm x 5 cm x 10 cm, with a total of five repeated samples. The research results indicate that the treatment with PEG resulted in greater changes in brightness and color compared to aquades and MEG. The effect of impregnation with PEG and MEG on color change falls into the large category, while the category for wood impregnated with aquades is moderate.
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.
Co-Authors Achmad Syarifudin, Achmad Denny, Shalehudin Denny Maruf Gesha Desy Alisha Hanifah, Nisrina Putri Hanindita, Shafira Indradewa, Rhian Jayawarsa, A.A. Ketut Kutana, Agung Nugrawan Resta Rene Mondina Riki Andika Sepsamli, Letus Wahyuningtyas, Irma Yusuf, Andi