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Dr. Ratih Damayanti
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INDONESIA
Wood Research Journal : Journal of Indonesian Wood Research Society
Published by Masyarakat Peneliti Kayu Indonesia
ISSN : 20873840     EISSN : 27749320     DOI : 10.51850/wrj
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Wood Research Journal is the official journal of the Indonesian Wood Research Society. This journal is an international medium in exchanging, sharing and discussing the science and technology of wood. The journal publishes original manuscripts of basic and applied research of wood science and technology related to Anatomy, Properties, Quality Enhancement, Machining, Engineering and Constructions, Panel and Composites, Entomology and Preservation, Chemistry, Non Wood Forest Products, Pulp and Papers, Biomass Energy, and Biotechnology. Besides that, this journal also publishes review manuscripts which topics are decided by the Editors.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 157 Documents
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The Effectiveness of Boron Preservatives to Prevent Dry-wood Termite Attack on Mahogany Sapwood Aryati Larasati; Joko Sulistyo
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.18-22

Abstract

Mahogany wood  is utilized for many furniture products and construction purposes. The objective of this experiment was to  prevent  wood-destroying  insects  by   using  boron  preservatives  such as boric  acid  and borax.   Materials  used were mahogany  sapwood  planks  (19   years)  obtained  from   community  forest  in  Kali  Bawang  District,  Kulon  Progo.  Two preservation  methods,  i.e.,  hot-soaking  (1,   2,   and  3  hours) and  the   cold-soaking  (12,   24,   36,   and  48  hours)  in  5% concentration,  were used. The drywood termites  (Cryptotermes  cynocephalus Light)  were used for  observation.  The result showed that  the  retention  value ranges were 4.25  to 12.99  kg/m3  for cold-soaking  method and 3.09  to 9.53  kg/m3  for heat- soaking method. Mortaliy rate and mass loss  due to termite attacks ranged from  56.0  to 80.6  % (control values : 43.3%) and 850  to  1370  mg  (control values : 1930  mg). Significant interaction between soaking time and the  type of  preservative was observed to  discover its  effect on  the  levels of  retention (cold soaking) and mortality rate of  termites (hot  soaking). Boron preservatives tended to enhance the  repellent properties than  its toxicity.
Study of Provenance and Site Variability on Calorific Value and Other Fuel Properties of Teak Stem Asri Prasaningtyas; Joko Sulistyo
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.23-28

Abstract

Currently  Perum Perhutani has  conducted  efforts  to  improve  the   productivity  of  teak  forest  by   provenance  trial. However, only a few  studies have so  far considered the  variation of these main  fuel  properties of wood under the  influence of external factors such as location and provenance. On the  other side, the  huge amount of waste was regularly generated from primary  and secondary  wood processings.  Therefore, in  this  research, the  calorific  value  and other fuel  properties  were investigated and related to provenance and growth site. This research used the  stem wood and bark of five provenances (1 to 5) of teaks that  were planted at  three sites  of Perhutani stand (Bojonegoro, Ngawi, Ciamis). The fuel  characterisctics of bark were only evaluated  at  Ciamis  site.  Compared  to  bark, wood generally had lower values  in  ash content, volatile  matter content, and density,  but  had higher values in fixed  carbon content, calorific  value, and Fuelwood Value Index levels. The caloric  values of  teak  wood and  bark were 4,191~4,520 cal/g  and 3,545~3,939 cal/g,  respectively.  Provenance and site interaction had significant effect to the ash content, density, and calorific value in wood. The samples from  Ciamis site (code Ft) had the  highest level  in  calorific  value. However, the  relation  between calorific  value and density  is  not  clear in  this experiment. With regard to bark, provenance 3 (Ft) showed the  best energy properties.
Synergistic effect of alcohols, ketone and water on the yield of soluble compounds and tannins from the barks of Azadirachta indica A. Juss. and Moringa oleifera Lam. Kwadwo Boakye Boadu; Augustine Sackey Jnr
Wood Research Journal Vol 13, No 1 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.1.25-33

Abstract

Investigations into the most efficient solvent or solvent mixtures which yield high quantities of tannins for the production of adhesives for the composite industry have been ongoing. However, knowledge on the synergistic effect of ketones, alcohols and water on the yield of soluble compounds and tannins from plants is lacking. Using the Soxhlet extraction method, the synergistic effect of ketone, alcohol and water mixtures in the extraction of soluble compounds and tannins from the barks of Moringa oleifera and Azadirachta indica was examined. Ketone, water and alcohols did not have a definite synergistic effect on the yields of soluble compounds and tannins from the two plants. Mixtures of some solvents, as opposed to their individual solvents, recorded high yield of soluble compounds. The reverse was also observed. Water extract recorded the highest quantity of soluble compounds in M. oleifera while, ethanol-methanol-water mixture (60:20:20) extracted the highest quantity of soluble compounds in A. indica.   The mixtures containing either a ketone or the alcohols produced comparatively high tannin yield in A. indica. This trend was not so for M. oleifera. The efficiency of solvents to extract soluble compounds depended mostly on the species.
EFFECT OF AGE AND LONGITUDINAL STEM SECTION OF LEGI BAMBOO (Gigantochloa atter (Hassk.) Kurz) AS FURNITURE AND HANDICRAFT MATERIALS Rini - Pujiarti
Wood Research Journal Vol 13, No 1 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.1.1-6

Abstract

Legi bamboo (Gigantochloa atter (Hassk.) Kurz) is a common and commercially important bamboo species for furniture and craft material. The aims of this research were to investigate the optimum processing quality for the furniture and craft material of 3 and 4 years old Legi bamboo in each stem section including processing properties and supporting information such as physical, mechanical, as well as adhesion properties. The result showed that optimal processing properties of Legi bamboo had average sawing defect of 1.93% (very good); drilling defect of 26.68% (good); planning defect of 4.70% (very good); lathing defect of 7.95% (very good), and sanding defect of 2.14% (very good), considered as I – II class of processing.  The results of this study indicate that the tip section of 3 years old Legi bamboo had the best physical, mechanical, and processing properties for its utilizations.
BONDING CHARACTERISTIC OF GAMBIR TANNIN-BASED ADHESIVE ON TUSAM WOOD (Pinus merkusii) IN VARIOUS AGES : EFFECTS OF GAMBIR LEAVES CONDITION AND EXTENDER ADDITION Adi Santoso; Erlina Nurul Aini; Dina Alva Prastiwi
Wood Research Journal Vol 13, No 1 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.1.12-24

Abstract

Exploration of natural wood adhesive as an alternative to conventional adhesives such as UF and PF is an interesting topic to be investigated further due to the increasing of human awareness on environmental sustainability and health. Among several types of natural adhesives, tannin-based adhesive is considerably potential to be developed as commercial wood adhesive. In Indonesia, one of the material that has high potential as a raw material for making tannin-based adhesives is gambir leaves. In this study, the effect of leaf freshness, extender content and wood age were studied on the quality of the laminated product. The results showed that all three factors have a significant effect on the compressive shear strength of the laminated wood. The condition of fresh leaves, 0% extender content and 27 years old wood produced a laminated product with the highest compressive shear strength. All laminated wood products in this study meet the compressive shear strength requirement of SNI standards. Moreover, all laminated wood glued using tannin adhesive from fresh leaves without addition of extender are also able to meet the JAS standard requirement of compressive strength. The research results also show that gambir tannin adhesive has properties and bonding strength that can compete with PF adhesive. From these results, we can conclude that gambir tannin-based adhesive demonstrates an ability to serve as an alternative for conventional adhesive commonly used in wood industry.
Biological Resistance of Jabon Wood Against Subterranean and Drywood Termites after Combined Impregnation and Compression Treatment Jamaludin Malik
Wood Research Journal Vol 13, No 1 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.1.34-42

Abstract

This study investigated Jabon wood [Anthochepalus cadamba (Roxb) Miq) impregnated with natural phenolic resin from Merbau extractives (ME) and subjected to hot compression treatments. The resistance of this wood to subterranean termites (Coptotermes curvignathus Holmgren) and drywood termites (Cryptotermes cynocephalus Light) was tested. The types of pre-treatments utilized were impregnation, repeated-impregnation, hot compression, and a combined treatment of impregnation and hot compression. The impregnation pre-treatment used crude ME and selected polymerized ME (PME22 and PME33). The resistance evaluation was based on the weight loss of the samples according to the Indonesian standard of SNI 7207 (2014). Untreated samples of jabon were classified as grade V (susceptible) against subterranean termites and grade IV (non-resistant) against drywood termites. Impregnation using only ME improved the resistance of Jabon wood against subterranean termite from grade V to grade IV. Against drywood termites, it changed from class IV to III and II. The resistance class of III against subterranean termites resulted from the treatments of various schedules of polymerized ME. Thus, the extractives contributed greatly to the protection of a less durable wood species against termite attack. Merbau extractives also distinctly improved the resistance of jabon wood from grade IV (non-resistant) to grade II (resistant).
The Effect of Slape Arrangement On Physical and Mechanical Properties Petung Bamboo Laminate Board (Dendrocalamus asper) Febriana Tri Wulandari; Habibi Habibi; Raehanayati Raehanayati; Rima Vera Ningsih
Wood Research Journal Vol 13, No 1 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.1.7-11

Abstract

Wood as a construction material is currently increasingly limited.  One alternative material as a substitute for construction wood is laminated bamboo. Laminated bamboo is a product made from several bamboo slats or bamboo slats that are glued together with the fiber direction parallel to the board with several requirements, among others, must have dimensions of length, width, and thickness that can be converted into boards or blocks. The type of bamboo that will be used in this research is petung bamboo (Dendrocalamus asper). Petung bamboo was chosen because it has a diameter that can reach 20 cm with a wall thickness of 1-3 cm, making it suitable for use as laminated bamboo. The purpose of this study was to determine the effect of blade arrangement on the physical and mechanical properties of petung bamboo laminated boards. The method used in this study is an experimental method with a non-factorial completely randomized design experiment with two treatments and three replications. Based on the results of the study, the arrangement of the laminated board blades did not significantly affect all tests of the physical and mechanical properties of the petung bamboo laminated board. All tests of physical and mechanical properties have complied with JPIC standard No. 1152 2007 except in the MoE test does not meet the standard. Based on the strength class of the laminated board, the bamboo petung laminated board is classified as strong class III which can be used as a protected heavy construction material.
Fuel Properties of Slab Wastes from Sengon Sawmills: A Case Study in Sleman and Wonosobo Regencies Joko Sulistyo; Binsar Edward Sianturi; Raditya Ananta Rustantoputro
Wood Research Journal Vol 12, No 2 (2021): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2021.12.2.69-75

Abstract

Sengon (Paraserianthes falcataria (L.) Nielsen) is a fast-growing and versatile species that has been established in community forests. Many sawmills utilize sengon wood as a raw material which generates wastes in the form of sawdust and slab consisting of a mixture of bark and wood. Those wastes are widely used by communities and home industries as fuel. The objective of this study was to characterize the energy properties of slab wastes from sengon sawmills in Wonosobo dan Sleman Regencies. The results showed that the calorific value and fuelwood value index (FVI) ranges were 4,089 to 4,749 cal/g and 2.71 to 18.74, respectively. The values of density ranged from 0.23 to 0.94 g/cm3. The proximate analysis showed that the values of moisture and ash contents ranged from 13.90 to 20.03% and from 0.30 to 4.59%, respectively, whereas volatile matter and fixed carbon contents ranged from 75.84 to 88.94% and from 10.23 to 20.62%, respectively. In general, the slab samples from Wonosobo gave higher values in fixed carbon content and FVI but smaller values in density, moisture content, volatile matter content, and ash content than those of the samples in Sleman. The bark part showed higher amounts in density, moisture content, fixed carbon content, and ash content but lower in volatile matter content, calorific value, and FVI than the wood part. Based on the wood consumption, sawmill recovery, calorific value, and dry weight biomass value, the potential annual energy from slab wastes in Sleman and Wonosobo reached 1,374 × 1013 cal (equivalent to 1,525,222  L of kerosene) and 1.521 × 1014 cal (equivalent to 16,884,016 L of kerosene), respectively.
Fast-Growing Wood-Polymer Nano Composite Characteristics through Nano-SiO2 Impregnation Istie Rahayu; Abdul Salam Min Rohmatillah; Esti Prihatini; Wayan Darmawan; Gilang Dwi Laksono; Vera Junita Sitanggang
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.69-78

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) and jabon (Anthocephalus cadamba) are fast-growing wood species that have low strength and durability class. One of methods for improving the characteristics of ganitri and jabon woods is impregnation. This study objectives were to analyze the effect of impregnation of Melamine Formaldehyde Furfuryl Alcohol (MFFA) copolymer and 0.5% Nano-SiO2 on the physical, mechanical and durability properties of ganitri and jabon woods. The impregnation process was carried out by applying a 0.5 bar vacuum for 1 hour and followed by 2 bar pressure for 2 hours. The results showed that impregnation with MFFA and Nano-SiO2 could improve optimally the physical and mechanical properties and durability of fast-growing woods
A Review: Effect of Heartwood Proportion in Wood Properties Rizki Arisandi
Wood Research Journal Vol 12, No 2 (2021): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2021.12.2.41-45

Abstract

This study aims to examine the effect of heartwood proportion on wood properties for construction materials by reviewing 98 journal articles and non-articles. The data were collected through an online search using seven keywords: heartwood proportion, heartwood effect, physical properties, mechanical properties, wood dimensional stability, wood gluing, and wood preservation. By eliminating the irrelevant papers, 45 journal articles and non-articles were selected. The review shows that the proportion of heartwood has a positive correlation with wood density and dimensional stability. High wood density will have a positive correlation with the mechanical properties of wood. However, the dimensional stability is not only affected by the proportion of the heartwood but also the microfibril angle and the arrangement of the wood cells. Further, sapwood has a higher moisture content than heartwood. The high moisture content causes the wood drying process to take longer and require more energy. However, it should be noted that the heartwood in some Acacia species has a higher moisture content than that in the sapwood, which is commonly called wet heartwood. Therefore, a suitable treatment is needed to minimize the moisture content in the heartwood. In addition, heartwood is difficult to preserve because of the high extractive content in the lumen. The color of the wood is another important indicator to determine the quality of wood, especially the heartwood color, because it is related to the aesthetic value and durability of the wood. Meanwhile, a better understanding of the acid and alkaline properties of extractive substances is necessary to perfectly conduct the wood gluing process.

Page 13 of 16 | Total Record : 157

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