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Jurnal Ilmu dan Teknologi Kayu Tropis

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Published by Masyarakat Peneliti Kayu Indonesia

ISSN : - EISSN : 16933834 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal ini mempublikasikan artikel asli baik penelitian dasar maupun terapan di bidang ilmu pengetahuan dan teknologi kayu, bahan berlignoselulosa bukan kayu, hasil hutan lainnya dan industri hasil hutan.

Arjuna Subject : -

Articles 316 Documents

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Properties of Wood Plastic Composite Using Primary Sludge as Filler Iwan Risnasari; Fauzi Febrianto; Nyoman J Wistara; Sucahyo Sadiyo; Siti Nikmatin
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 1 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Sludge is the largest waste produced from the pulp and paper mill, it consists of 50-60% fibers and inorganic materials and have caused serious disposal problem. Recycling sludge into value-added product can give environmental and economic benefits. The objective f this research was to optimize utilization of sludge as filler in wood plastic composite using polypropylene as a matrix resin. Sludge with and without purification treatment were used as filler. The concentration of filler used was 40%, 50% and 60%. Maleic anhydride-modified- polypropylene (MAPP) with concentration of 5% was used as a coupling agent. Filler, matrix with and without coupling agent were compounded using Haake polydrive labopastomill at 175 °C, 60 rpm for 20 min. The results indicated that the morphology, physical, mechanical and thermal properties of wood plastic composites was much influenced by purification treatment, filler loadings and addition of coupling agent. Interaction of between fibers and matrix resin and thermal stability of wood plastic composites were much improved by purification treatment on sludge and addition of coupling agent.Keywords: coupling agent, fillers, purification, sludge, wood plastic composite

Sifat Fisis Mekanis Papan Partikel dari Serat Sisal atau Serat Abaka setelah Perlakuan Uap Physical and Mechanical Properties of Particleboard Made from Steamed Treated Sisal or Abaca Fibers Firda A Syamani; Kurnia W Prasetyo; Ismail Budiman; Subyakto Subyakto; Bambang Subiyanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 2 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Composites made from natural fibers have several weakness, particularly on thickness swelling, due to fiber dimensional changes during swelling of fiber cell wall or changing of lumen dimension by moisture uptaken. Steam treatment on fiber had been expected could reduced fiber water absorbancy by plasticized matrix of fiber cell walls. Fiber of Sisal and Abaca was chopped into 0.5 ~ 2.0 cm of length. Steam treament was conducted in autoclave for 30 minutes on 1.15 atm of pressure and 121ºC of temperature. Chopped fiber was dried in 60ºC oven to obtain 4% of moisture content. Dried fiber was mixed with 10% urea formaldehyde (UF) resin or 8% and 10% melamine urea formaldehyde (MF) resin (based on weight of fiber oven-dried). Glued fiber was formed into 25cm x 25cm x 0.8cm mat, then hot pressed at 20 kgf/cm2 pressure for 10 minutes. Target density was 0.7 g/cm3. Composites conditioning was conducted at room temperature for moisture equilibrium to the enviroment. Physical dan mechanical characteristics testing was carried out based on JIS A 5908 for particle board. Steam treatment could improved physical and mechanical properties of particleboard made from sisal fiber using 8% MF.

Variation of Tensile Strength and Cell Wall Component of Four Bamboos Species Nareworo Nugroho; Effendi T Bahtiar; Dwi P Lestari; Deded S Nawawi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Bamboo is an alternative material of timber for building construction and furniture. The information of basic characteristic of bamboo is very important regarding to effective utilization of bamboo. This research aims to evaluate the variation of tensile strength and its relation to chemical cell wall component of bamboos. Four bamboos species namely andong (Giganctochloa psedoarundinaceae), betung (Dendrocalamus asper), mayan (Gigantochloa robusta), and tali (Gigantochloa apus) bamboos were subjected to analysis of its hollocellulose, cellulose, lignin, and tensile strength. Bamboo samples were taken from internode and node of middle section of bamboos stem.The results showed that the tensile strength of bamboo was influenced by chemical components of cell wall. The high content of alpha-cellulose and lignin contributed to high tensile strength of bamboo. Internode section of bamboo stem exhibited to have a higher tensile strength compared to node section.Key words: alpha cellulose, bamboo cell wall components, lignin content, tensile strength

Variabilitas Massa Jenis Kayu Daun Lebar Tropis terhadap Karakter Serat, Kimia dan Pulp Sulfat Variability of Wood Specific Gravity of Tropical Hardwoods to the Characteristic of Fibers, Chemicals and Pulp Sulfate Wawan K Haroen
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 4, No 2 (2006): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The demand for hardwood pulp is rapidly increasing in the world, partly due to the limited availability of softwood and hardwood in developed country of the world and partly due to the technical advantages which short hardwood fibers process for various paper and paperboards. The study was confined to the establishment of appropriate criteria pulpwood from tropical forest. The evaluation and analysis on the effect of wood specific gravity on the fiber properties, wood chemical properties, and pulp characteristics were conducted using data source from Food and Agriculture Organization (FAO).The data of wood specific gravity value for the species varied a wide range from 0.30 to 0.98, because of dense nature of wood, high specific gravity species are generally believed to require impregnation and cooking periods. While some among the denser species have high screening reject and high permanganate number (PN) or Kappa number (KN) values. The finding of liquor penetration of chips does not depend wholly on specific gravity but also on the anatomical structure and chemical constituents of wood. As to the other wood and fiber characteristics, strength and physical properties of pulp hand sheet, wood specific gravity a certain relationship to fiber morphology.The results showed that variability of wood specific gravity affected the cell wall thickness, lignin content and pulp sulfate quality. This result of analysis can be used as a preliminary pulping indicator.

Maximum Compression Level Measurement of Oil Palm Trunk Rudi Hartono; Imam Wahyudi; Fauzi Febrianto; Wahyu Dwianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 1 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objectives of this research were to study the density distribution and stress-strain curve (SSC) of oil palm trunk (OPT). The 40 year-old of OPT was used for these experiments. The specimen was taken from 1 m, 3 m and 5 m height of OPT with dimension of (2 x 2 x 2) cm3 for density distribution measurements. The interval of it was 2 cm from the outer near the bark to the inner near the center. The specimen for SSC measurements was taken only from 1 m height with the same dimension, interval, and position, as well. These specimens were treated into three conditions, i.e. air dry, wet and water saturated. The results showed that density of OPT was 0.23-0.74 g cm-3. The stress-strain curves showed that water saturated and wet conditions were easier to compress than that of air dried condition. The compression level increased from the outer to the center of the trunk. The center part can be compressed into 67% in air dry condition and 72-73% in wet and water saturated conditions from their initial thickness. Relationships between compression level, showing by strain, and density expressed as polynomial equations, regardless of the three conditions.Key words: compression, density distribution, OPT, SSC, vascular bundles

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

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.

Pengaruh Umur Panen Pinus Hutan Tanaman terhadap Kualitas Kayu Pertukangan Effect of Harvesting Age of Pine from Forest Plantation on Quality of Wood Construction Materials Nurwati Hadjib; Osly Rachman
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 1 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Research on some properties of wood Pine (Pinus merkusii Jungh et de Vriese) to determine technical rotation for wood construction materials matched to the technical requirements. Pine wood investigated originated from KPH Sukabumi, West Java, from site index III and age of 17, 21, 23, 27 and 28 years. The results showed that morphology, diameter at breast height (DBH), sawing recovery, volume, veneer recovery and bonding strength were not significantly different at 95% confidence level. DBH and cylindricity tend to increase from age of 17 years until 27 years and decrease at 28 years in parabolic. The maximum DBH reach at 25 years, while cylindricity at 26 years. The sawing recovery tends to increase from 17 to 21 years, decrease at 23 years and increase at 27 years. Screw withdrawal resistance of five age level wood tested were significantly different. The relationship between age and wood properties tested tends to the same pattern, paraboloid, while volume and veneer recovery were linear. Differentiated of these equation showed that maximum DBH reach at age of 25, sawing recovery 28 years, maximum density and screw withdrawal resistance at 23 years, bonding strength and wettability at 22 years. Based on its machining properties, wood from 17-21 years belong to class II, and class I for 23 ~ 28 years.

Characteristics of Plybamboo made from woven mat of Andong Bamboo (Gigantochloa pseudoarundinaceae) Ega P Yoga; Sukma S Kusuma; Jajang Suryana; Muhammad Y Massijaya
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to analyze the influence adhesive types, composition of width and thickness of bamboo strips to the physical and mechanical properties of plybamboo. Keywords: andong bamboo, epoxy, plybamboo. PVAc

Effective Utilization of Fast-Growing Acacia mangium Willd. Timber As a Structural Material Anita Firmanti; Kohei Komatsu; Suichi Kawai
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 5, No 1 (2007): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study aims to evaluate the full-scale strength performance of Acacia mangium Willd. timber and establish characteristic values, as well as the timber strength classes, by the application of mechanical grading. A total of 120 actual size specimens were selected from two areas and the modulus of elasticity and modulus of rupture were tested. The results showed that A. mangium timber could be a substitute structural material for light timber construction. Effective utilization of A. mangium timber could be obtained when the timber is mechanically graded. The result promotes the effective utilization of A. mangium timber, which has a high annual growth rate, from managed forests, thus reducing the destruction of natural tropical forests.

Some Chemical Properties and Natural Durability of Samama Wood (Antocephalus macrophylus Roxb.) against Subterranean Termite Tekat D Cahyono; Syarif Ohorella; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Samama wood (Antocephalus macrophylus Roxb.) is an endemic wood of Sulawesi and Moluccas. This wood belongs to the 3rd class of wood strength. However, its natural durability against termite attack is still unknown. Therefore, the research about its extractives, ash content, heating value, and natural durability is paramount to appropriate usage of the wood. The samples were prepared from samama wood with diameter and height of 30-45 cm and 8.2-11.4 m, respectively. The results indicated that the extractive solubility in hot water, cold water and ethanol benzene were 7.83, 3.86, and 4.47%, respectively. The ash content was 1.31%, meanwhile the heating value was 4059 cal g-1. Based on its weight loss value, according to SNI 01-7207-2006 standard, the natural durability of samama wood against subterranean termite (Coptotermes curvignathus) is classified as in the 2nd class.Key words : Antocephalus macrophylus, extractives, heating value, natural durability, subterranean termite

Page 19 of 32 | Total Record : 316

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