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Ciri Finir Kupas Kayu Jabon (Anthocephalus cadamba) Abigael Kabe; Wayan Darmawan; Muh. Yusram Massijaya
Jurnal Ilmu Pertanian Indonesia Vol. 18 No. 3 (2013): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Fast growing jabon is largely rotary-cut to produce veneer for plywood, com-ply, and LVL. In order to provide better information on veneer production and utilization, in this study the effects of wood juvenility and veneer thickness on lathe checks of jabon rotary-cut veneer were evaluated. Before veneer manufacturing, the jabon log was boiled at 50 and 75 °C for 4 and 8 hours respectively. The boiled logs were peeled to produce veneer of 1 and 2 mm thick. Lathe checks of veneers were measured under an optical video microscope. The rotary-cut veneer was grouped and evaluated separately at every segmented ring of 1 cm from pith to bark. The results showed that wood juvenility and veneer thickness had an important effect on lathe checks for the rotary-cut veneer. In general, the number of lathe check of the veneer increases with increasing veneer thickness and increase from pith to bark. Boiling of logs before rotary-cutting could decrease the value of lathe check. The results indicated that boiling of logs at 50 °C for 8 hours, and at 75 °C for 4 and 8 hours could minimize the number of lathe checks in manufacturing of 1 and 2 mm rotary-cut veneer from juvenile wood jabon.

The purpose of this study was to analyze the phisycal and mechanical properties of binderless particleboard using bamboo as raw materials. Andong bamboo (Gigantochloa pseudoarundinaceae) used in this study was taken from Bogor area. Bamboo was converted using hammer mill and air dried subsequently. The particle zise was passed of the 20 mesh screener. Three types pretreatment were used to prepare the particle, namely : 1) water boiling for 30 and 60 minutes, 2) oxydation using hydrogen peroxyde, SUHASMAN .; Muh. Yusram MASSIJAYA; Yusuf Sudo HADI; Adi SANTOSO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 3 No. 1 (2010): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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The purpose of this study was to analyze the phisycal and mechanical properties of binderless particleboard using bamboo as raw materials. Andong bamboo (Gigantochloa pseudoarundinaceae) used in this study was taken from Bogor area. Bamboo was converted using hammer mill and air dried subsequently. The particle zise was passed of the 20 mesh screener. Three types pretreatment were used to prepare the particle, namely : 1) water boiling for 30 and 60 minutes, 2) oxydation using hydrogen peroxyde, and 3) combination of water boiling for 30 minutes and oxydation using hydrogen proxide. As a control, conventional particleboards using 10 % melamine formaldehyde (MF) resin based on dry particle weight was produced. The particle which has pretreated then utilized to produce binderless particleboard with board density of 0.75 g/cm3. The pressing conditions were 180 oC in temperature, 25 kgf/cm2 in pressure for 20 minutes. The board characteristics were tested according to JIS A 5908 2003. The results indicated that particleboard made from particle with oxydation pretreatment performed superior characteristics compared to those of particleboard made from particle only with water boiling pretreatment. Dimensional stability and modulus of elasticity of board with oxydation pretreatment were excellent. Its was superior compared to that of conventional particleboard using melamine formaldehyde as adhesive. Keywords : Bamboo, Binderless Particleboard, Oxydation, Hydrogen Peroxyde

The objectives of this research were to determine and to compare the physical and mechanical properties of OSB made of strands from three small diameter fast growing species, namely Akasia (Acacia mangium Willd.), Ekaliptus (Eucalyptus sp.), and Gmelina (Gmelina arborea Roxb.). There were 3 models of OSB produced which bonded by 2 types of adhesive, namely Phenol Formaldehyda (PF) powder type, isocyanate (IC), and the face and back layers bonded by powder PF and the core layer bonded by IC. OSB Arif NURYAWAN; Muh. Yusram MASSIJAYA; Yusuf Sudo HADI
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 1 No. 2 (2008): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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The objectives of this research were to determine and to compare the physical and mechanical properties of OSB made of strands from three small diameter fast growing species, namely Akasia (Acacia mangium Willd.), Ekaliptus (Eucalyptus sp.), and Gmelina (Gmelina arborea Roxb.). There were 3 models of OSB produced which bonded by 2 types of adhesive, namely Phenol Formaldehyda (PF) powder type, isocyanate (IC), and the face and back layers bonded by powder PF and the core layer bonded by IC. OSB was made of three plies, with 9 mm target thickness and ratio of strands weight in face : core : back was 1:1:1. Mat forming methods in face was lengthwise and the core was widthwise. Level of adhesive 7% based on oven dry strands weight, pressed at 25 kg/cm2 for 15 minutes at 160 °C. Japanese Industrial Standard (JIS) A 5908-2003 for particle board 24-10 type was used as standard. Results of this research showed generally physical properties consist of density, moisture content, and thickness swelling fulfilled JIS A 5908-2003 standard. Unfortunatelly, the dimensional stability should be improved, the range 24 hours water absorption was about 22.35–44.63%. For mechanical properties, which consist of internal bonding, modulus of rupture (MOR) and modulus of elasticity (MOE) which be evaluated in dry condition both lengthwise and widthwise generally fulfilled JIS A 5908-2003 standard. However, there were values of MOR and MOE which be evaluated in wet condition both of lengthwise and widthwise did not fulfill JIS A 5908-2003 standard. The best performance of OSB was which bonded by IC for all the wood species. Using PF powder at the face and back layers and IC in the core layer of OSB generally increased their physical properties (dimensional stability) but decreased their mechanical properties. Keywords : Physical and mechanical properties, OSB, small diameter fast growing species, adhesive

Glued-laminated (glulam) beams is one of engineered wood products used for structural applications. The objective of this research is to evaluate characteristics of glulam beams made from Acacia mangium Willd. Laminations used were 2, 4, 6, 8 and 12 cm in widthnesses, 2 cm in thickness and 260 cm in length. Each lamination was graded using Machine Stress Grading (namely by Panter or plank sorter) to determine the modulus of elasticity (MOE) value. The glulam beams was 6 cm x 12 cm in five Evalina HERAWATI; Muh. YUSRAM MASSIJAYA; Naresworo NUGROHO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 1 No. 1 (2008): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Glued-laminated (glulam) beams is one of engineered wood products used for structural applications. The objective of this research is to evaluate characteristics of glulam beams made from Acacia mangium Willd. Laminations used were 2, 4, 6, 8 and 12 cm in widthnesses, 2 cm in thickness and 260 cm in length. Each lamination was graded using Machine Stress Grading (namely by Panter or plank sorter) to determine the modulus of elasticity (MOE) value. The glulam beams was 6 cm x 12 cm in five types of cross-section which arranged by various widths and those MOE of laminations. Glulam beams were bonded by water based polymer isocyanate (WBPI) using 280 g/m2 double glue spread. The research results showed that glulam beams made from A. mangium Willd. fulfilled the JAS 234:2003 standard as on following properties: moisture content, MOE, MOR, shear strength and immersion delamination test. However, performance of glulam was unsatisfactory in wood failure ratio and boiling water soak delamination test. Keywords: Glulam beam, MOE, MOR, shear strength, delamination

The objective of this research is to evaluate the characteristic of composite board made from coconut fibre, recycled polypropylene (RPP), and bamboo matting layers. The board samples target density was 0,70 g/cm3. The board construction type was core type composite board (three layers). Coconut fiber and RPP were used as core, and bamboo matting was used as face and back layers. RPP was used 50% based on coconut fiber oven dry weight. The bamboo sheet wide is 1 cm and 2 cm, with and without b Dina SETYAWATI; Yusuf SUDO HADI; Muh. YUSRAM MASSIJAYA; Naresworo NUGROHO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 1 No. 1 (2008): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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The objective of this research is to evaluate the characteristic of composite board made from coconut fibre, recycled polypropylene (RPP), and bamboo matting layers. The board samples target density was 0,70 g/cm3. The board construction type was core type composite board (three layers). Coconut fiber and RPP were used as core, and bamboo matting was used as face and back layers. RPP was used 50% based on coconut fiber oven dry weight. The bamboo sheet wide is 1 cm and 2 cm, with and without bark. The bamboo matting layers were used in slope (45˚) and perpendicular (0/90˚) orientation to length of the board. The research results showed that utilization of bamboo matting layers increase the mechanical properties of board. All of composite board made from coir, RPP, and bamboo matting layers fulfill the JIS A 5908 standard in density, thickness swelling after 24 hours of water immersions, and screw holding power. Only composite boards with bamboo matting layers with bark, sheet wide 1 cm, and perpendicular orientation to length of the board fulfill JIS A 5908 1994 standard for veneered particleboard in MOE. However, application of bamboo matting layers without bark is adviced better because more efficient in the raw material using. Keywords: Composites board, coconut fiber, recycled polyprophylene, bamboo matting layers

KUALITAS PAPAN KOMPOSIT YANG TERBUAT DARI LIMBAH KAYU SENGON DAN KARTON DAUR ULANG . Suhasman; Muh. Yusram Massijaya; Yusuf Sudo Hadi
PERENNIAL Vol. 2 No. 1 (2006)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v2i1.147

The use of recycled carton as an alternative material for the layer of composite board may increase the board strength properties. The objective of this research was to find out the influence of face and back layer types on the quality of produced boards. Materials used in this study were wafer made from sengon wood (Paraserianthes falcataria L. Nielsen), water based polymer isocyanate adhesive, and several kinds of cartons such as duplex carton, recycled carton, and waste of corrugated board. The composite board was produced with the target density of 0.65 g/cm3 and the resin solid content of 6% based on oven dry weight of particle, face and back layers. The results are as follows : 1) Utilization of carton layers improved the dimensional stability and bending strength of board; 2) Composite board with recycled carton layer fullfilled the Japanese Industrial Standard (JIS) A-5908-1994 for wafer board type in terms of density, water content, and modulus of rupture (MOR) in lengthwise and widhtwise of board but, did not fullfill that for veneered particled board type; 3) The presence of those layer material types decreased internal bond of the board. Keywords : composite board, face and back layer types, recyled carton

KUALITAS PAPAN KOMPOSIT BERLAPIS FINIR DARI SABUT KELAPA DAN PLASTIK POLIETILENA DAUR ULANG: VARIASI UKURAN PARTIKEL SABUT KELAPA Dina Setyawati; Yusuf Sudo Hadi; Muh. Yusram Massijaya; Naresworo Nugroho
PERENNIAL Vol. 2 No. 2 (2006)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v2i2.155

Agricultural fibers are currently used as a substituted resource to wood-based products. One of agricultural fibers that has been developed and become a resource for panel products is coir (coconut fiber). The purpose of this study is to evaluate the quality of veneered composite board made of coir and recycled polyethylene (RPE). The target density of board samples was 0.7 g/cm3. The board construction type is core type composite board (three layers). Veneers from Meranti (Shorea sp.) were used as face and back layers and coir was in the core layer. RPE composition was 50% based on coir particle and veneers oven dry weights. Recycled plastics were placed in three layers, 30% on the face and back layers, and 70% in the core layer. The coir sizes were under 1 cm, 1 cm, 5 cm, 10 cm, and 10 cm up (along coir size). The composite board samples were tested by JIS A 5908 – 1994. Each parameter was measured in three replications. The research results obtained are as follows : (1) Veneered composite boards made of coir and RPE fulfill the JIS A 5908 standard in term of density, thickness swelling after 2 and 24 hours of water immersions, modulus of elasticity, modulus of rupture and internal bond, and (2) The coir size did not significantly affect the properties of composite board. Keywords: veneered composite board, coir size, recycled polyethylene

KETAHANAN PAPAN KOMPOSIT DARI LIMBAH KAYU SENGON DAN KARTON TERHADAP RAYAP KAYU KERING DAN RAYAP TANAH . Suhasman; Muh. Yusram Massijaya; Yusuf Sudo Hadi; Astuti Arif
PERENNIAL Vol. 4 No. 1 (2008)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v4i1.180

This study was aimed to analyze the resistance of composites board made from wafer and carton or paper overlaid on drywood termite and subterranean termite. Materials used in this study were wafer from sengon wood (Paraserianthes falcataria L. Nielsen), water based polymer isocyanate adhesive, veneer, and several kind of carton and paper such as duplex carton, recycle carton, corrugate board, and waste of cement sack. The target density was 0.65 g/cm3, while the resin solid content was 6%. The result of this study showed that no significantly different on infection rate of drywood termite among of composite board types and solid wood. The weight loose of composites board were 1.2–3.8%, while solid wood was 2.7%. Composites board more favorable to infection Macrotermes gilvus than solid wood. The weight loose of composites board were 19.3 – 28.8%, while solid wood was 12.6%. Key words: Composites board, drywood termite, subterranean termite

PEMANFAATAN LIMBAH PELEPAH SAWIT DAN PLASTIK DAUR ULANG (RPP) SEBAGAI PAPAN KOMPOSIT PLASTIK Lusita Wardani; Muh. Yusram Massijaya; M. Faisal Machdie
Jurnal Hutan Tropis Vol 1, No 1 (2013): Jurnal Hutan Tropis Volume 1 Nomer 1 Edisi Maret 2013
Publisher : Lambung Mangkurat University-Indonesia

Penelitian mengenai sifat fisik dan mekanik papan komposit dari partikel pelepah sawit (POP) dengan limbah plastik polypropilen (RPP) dibuat berdasarkan perbedanaan ukuran partikel pelepah sawit .Variasi ukuran partikel adalah 20, 40 dan 6 mesh menggunakan RPP dengan ukuran 60 mesh pada komposisi 7 :3. Selain itu dibuat dengan membedakan penggunaan bahan compaitibilzer Maleic Anhihyde (MAH) dengan insiator Benzoil peroksida (BPO). Proses pengolahan dibat satu tahap dengan mencapur bahan secara manual pada suhu kempa 190⁰C selama 10 menit pada tekanan 1 kg/cm². Hasil penelitian menyatakan bahwa ukuran partikel dan penggunaan MAH dan BPO meningkatkan sifat fisik dan mekank papan plastik tersebut.. Pengujian dilakukan dengan mennggunakan standar JIS A 5908-2003Kata Kunci : ukuran partikel, pelepah sawit, RPP, MAH dan BPO

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