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Sifat Keawetan dan Fisis-Mekanis Kayu Kecapi dan Rambutan setelah Perlakuan Pemanasan Minyak sebagai Upaya Peningkatan Mutu Kayu Ramah Lingkungan Trisna Priadi; Silva D. Maretha
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 2 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (578.529 KB) | DOI: 10.51850/jitkt.v13i2.31

Abstract

Kayu yang berasal dari hutan atau lahan masyarakat pada umumnya berkualitas rendah.  Oleh karena itu diperlukan aplikasi teknologi tepat guna dan ramah lingkungan agar kayu tersebut dapat diandalkan sebagai bahan bangunan yang baik dan tahan lama tanpa menimbulkan dampak lingkungan yang merugikan.   Sehubungan dengan itu maka penelitian ini bertujuan untuk mengetahui keawetan kayu setelah diberi perlakuan pemanasan dalam minyak serta mengetahui pengaruh proses pemanasan tersebut terhadap sifat fisis dan sifat mekanis kayu. Bahan yang digunakan dalam penelitian ini adalah kayu kecapi (Sandoricum koetjape Merr) dan kayu rambutan (Nephelium spp). Pemanasan kayu dilakukan dalam limbah minyak goreng yang sudah disaring pada suhu 100 °C, 150 °C, dan 180 °C dalam waktu satu dan dua jam. Selanjutnya keawetan kayu tersebut diuji dengan metode graveyard test (ASTM D 1758-96). Sifat fisis (penambahan berat dan kerapatan) serta sifat mekanis (MOR dan MOE) kayu juga diuji berdasarkan ASTM D 143.  Hasil penelitian menunjukkan bahwa pemanasan 100 oC selama satu jam  baik  untuk  meningkatkan  keawetan  kayu  kecapi  dan  Rambutan  dari  rayap  tanah. Pemanasan minyak 180 °C satu jam juga menghasilkan sedikit peningkatan keawetan kayu kecapi lebih tinggi dari hasil pemanasan 100 °C. Pemanasan kayu dalam minyak juga meningkatkan secara nyata berat dan kerapatan kedua jenis kayu, sedangkan sifat mekanisnya  secara umum tidak terpengaruh nyata terutama pada pemanasan yang tidak lebih dari 100 °C.   
Physical and Mechanical Properties of Samama Wood Glulam Tekat D Cahyono; Syarif Ohorella; Fauzi Febrianto; Trisna Priadi; Imam Wahyudi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.208 KB) | DOI: 10.51850/jitkt.v12i2.74

Abstract

In the present research, four types of samama wood (Anthocephallus macrophyllus) glulam of (3 x 6 x 120) cm3 (thickness, width, length) in size were prepared. Two types of glulam were assembled with the same thickness of lamina and two other types were assembled with lamina of different thickness. The result showed that the average moisture content and densities of the glulam were of 12.48% and 0.41, respectively. The MOE, MOR, and shear strength of the glulam were in the average of 6.08 GPa, 33.06 MPa, 30.08 kg cm-2, respectively. The highest MOE and MOR were obtained by the D type glulam. All types of the produced glulam contributed to the increase of MOE and MOR by 31 and 23% of those of its solid wood, respectively.Keywords: glulam, mechanical properties, physical properties, samama wood
Dimensional Stability and Wettability of Modified Samama (Anthocephallus macrophyllus) Wood with Boron, Citric Acid, and Heat Treatment Priadi, Trisna; Wardhani, Miranti Kusuma; Putra, Guruh Sukarno; Cahyono, Tekat Dwi
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1056

Abstract

This research aimed to address the leaching phenomenon of boron preservatives in wood. The subsequent investigation focuses on wood's dimensional stabilization and wettability after a two-stage impregnation process. Samama (Anthocephallus macrophyllus) wood was impregnated with boron (boric acid, borax, and a combination of both) at a pressure of 7 atm for 4 hours, with each preservative’s concentration set at 5%. After oven drying at 60°C until achieving a 15% moisture content, the next step involves a second-stage impregnation with citric acid (at a 5% concentration) under the same pressure and duration. The final step included heat treatment at 80°C and 160°C for 4 hours. The research results indicate that boron and citric acid enhance the dimensional stabilization of samama wood. The best dimensional stabilization treatment combines boric acid, borax, citric acid, and heat treatment at 160°C. This study confirms that citric acid improves the dimensional stabilization of samama wood, whether used with boron or not. Compared to treatments without citric acid and heating, the two-stage impregnation reduces boron leaching by up to 30%. The research also recommends that all treatments exhibit good finishing properties. Keywords: Anthocephallus macrophyllus, boron, dimension stabilization, impregnation, wettability
THE FIRE RESISTANCE AND FIELD TEST OF TREATED Maesopsis eminii WOOD WITH BORON PRESERVATIVE, VEGETABLE OILS, AND HEATING Priadi, Trisna; Badruzzaman, Muhammad Hilmy
Indonesian Journal of Forestry Research Vol. 12 No. 1 (2025): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2025.12.1.39-51

Abstract

Boric acid can be combined with vegetable oil treatment to enhance wood preservation. This research aimed to evaluate the fire resistance and above-ground field test of treated manii (Maesopsis eminii Engl.) wood with boric acid, vegetable oils, and heating. Manii wood samples were impregnated sequentially with boric acid solution and vegetable oils (neem, tamanu, and candlenut) in a tank at a pressure of 7 kg cm−2 for 4 hours at room temperature, ±26ºC. The subsequent heat treatment was at 60ºC, 120ºC, and 180ºC under atmospheric pressure for 4 hours. The fire resistance was evaluated based on sample weight loss after burning with a heating torch at 180°C ± 5°C for 4 minutes. The above-ground field test of woods was conducted on a shelf with a slope of 45º for 90 days. The results revealed that the combination of boric acid and vegetable oils treatment had better fire resistance than boric acid treatment and the control of manii wood. In the above-ground field test, the combination of boric acid and vegetable oils treatment also resulted in less weight loss due to weathering and fungal attacks. Moreover, the moisture content change was less than that of the boric acid treatment and the control samples. However, oil treatment caused a higher color change than the control samples during the field test.
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 Hydrophilicity of Samama Wood Surface Quality after Boron, Methyl Methacrylate Impregnation, and Heat Treatment Cahyono, Tekat Dwi; Priadi, Trisna; Noviyanti, Eka; La Djumat, Juni; Kaliky, Fitriyanti
Jurnal Sylva Lestari Vol. 12 No. 1 (2024): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i1.851

Abstract

Indicators of surface roughness and surface-free energy can represent the improvement in wood surface quality. In this study, those two indicators were used to determine the change in the samama (Anthocephalus macrophyllus) wood surface following two modification steps, namely impregnation and heat treatment. The first step was boron impregnation in two forms applied separately, i.e., boric acid and borax. The second step was impregnation of methyl methacrylate followed by heat treatment at 90°C and 180°C. Surface roughness was determined following the ISO 4287:1997 standard, and surface free energy was analyzed using the Rabel Method. The results showed that the radial surface of samama wood naturally had a lower roughness than the tangential surface. Impregnation with boric acid, borax, and methyl methacrylate increased the wood surface roughness. However, heat treatment at 180°C tended to smooth the rough surface. Total surface free energy was altered after borax and methyl methacrylate impregnation. However, heat treatment seemingly withdrew the alteration. The polar components and dispersion contributed to total surface free energy with different compositions. In this study, the change in surface roughness was not congruent with the change in total surface free energy. Keywords: boron, heat treatment, impregnation, samama, surface free energy
EVALUASI CACAT PENGERINGAN DAN PEMESINAN PADA EMPAT JENIS KAYU CEPAT TUMBUH TERMODIFIKASI PANAS Ulfa Adzkia; Trisna priadi; Lina Karlinasari
Jurnal Penelitian Hasil Hutan Vol. 37 No. 3 (2019): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2019.37.3.204-216

Abstract

Heat treatment is one method that can improve the quality of wood including for fast-growing wood species. However,this treatment can cause some drying defects as well as the change of machining properties after applying that heattreatment. The purpose of this study was to evaluate the effect of wood species and heating time on the drying andmachining defects. The fast-growing wood species used were teak, mangium, jabon, and sengon. The heat treatmentwas carried out at a temperature of 165°C with variation in time were 0 (control), 2, and 6 hours. The result showedthat the moisture content and wood density decreased after heat treatment. Heat treatment was succeeded to decrease themoisture content of 57% and caused a decreasing of density until 20% compared with control wood. The drying defectsof end checks in teak, mangium, jabon and sengon increased after 2 and 6-hour heat treatment. In the other hand, thesurface checks defect of teak, mangium, sengon and jabon were decreased. The defects after applying machining activitiesi.e. the defects of sanding, planing, shaping, and boring were decreased in teak, mangium, jabon and sengon after heattreatment of 2 and 6-hour. Jati was the best wood species in term of machining quality followed by jabon, mangium,and sengon after heat treatment. At the temperature of 165°C in 2 hours could be considered as the appropriate timefor heat treatment in term of obtaining minimal defects of drying and machining.
BIOACTIVITY ANALYSIS of Annona glabra L. SEED EXTRACTS FOR WOOD PROTECTION AGAINST Termites (Cryptotermes cynocephalus Light. AND Coptotermes curvignathus Holmgren.) Priadi, Trisna; Chotimah, Nurul; Ismanto, Agus
Indonesian Journal of Forestry Research Vol. 8 No. 2 (2021): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2021.8.2.127-134

Abstract

Pond apple (Annona glabra L.) belongs to the family of Annonaceae. The seed of A. glabra contains bioactive substance that is toxic to some organisms, however the effectiveness to control wood degrading termites has not yet been scientifically reported. This research analyzes the efficacy of A. glabra seed extract to wood degrading termites. Seed extraction was conducted using n-hexane and ethyl acetate. The paper disc test showed that the extract of A. glabra is toxic to Cryptotermes cynocephalus (dry-wood termites) and Coptotermes curvignathus (subterranean termites). The higher extract concentration (up to 63%) resulted in a higher termite mortality (up to 100%) and lower weight loss of paper sample (less than 1%). Ethyl acetate extract of A. glabra seeds has a better toxicity effect than n-hexane extract against dry wood termites and subterranean termites.
Resistance to Termites and Colour Change in Gombong Bamboo (Gigantochloa pseudoarundinacea) Modified with Boron Compounds, Vegetable Oil, and Heating Pangestu, Lilih Cipta; Priadi, Trisna; Prayogo, Yanico Hadi
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1270

Abstract

Bamboo is a potential material in the furniture, construction, and craft industries due to its rapid growth and good physical and mechanical properties. However, its vulnerability to attacks by wood–destroying organisms, particularly termites, necessitates preservation to extend its service life. This study evaluated the resistance of gombong bamboo to subterranean and drywood termites, as well as its color changes. The modification treatments involve boric acid equivalent (BAE) impregnation, heat treatment (60 °C, 150 °C, and 180 °C), and vegetable oils (linseed and neem oil). Statistical analysis using one-way ANOVA was performed to determine the significance of each treatment factor on weight loss and colour parameters, followed by Duncan’s Multiple Range Test for mean comparison. In addition, color change and the chemical composition of the most effective oil treatment in terms of termite resistance were analysed using Gas Chromatography-Mass Spectrometry (GC-MS). The results showed that BAE, neem oil, and the combined treatments (BAE-vegetable oils) effectively improved bamboo resistance to both termite tests. The synergy between BAE impregnation, heat treatment (180 °C), and neem oil produced the highest level of termite resistance. Heat treatment at elevated temperatures also caused significant colour changes, particularly a reduction in brightness (L*) and an increase in dark brown tones attributed to thermal degradation of hemicellulose and extractives. GC-MS analysis revealed that neem oil was dominated by fatty acids and other compounds known for their antimicrobial, antifeedant, and termite-repellent activities, which likely contributed to the enhanced biological performance of the treated bamboo. Keywords: bamboo modification, bio-based treatment, impregnation, sustainable bamboo utilization