Articles
<![CDATA[10.20886/jphh.2018.36.2.129-138 ]]>
<![CDATA[Jamal Balfas]]>;
<![CDATA[Efrida Basri]]>;
<![CDATA[Adi Santoso]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 36 No. 2 (2018): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2018.36.2.113-128
<![CDATA[The use of wood filler is vital in wood finishing. However, the most commercial wood fillers available in the market are made of chemical solvent-based resins, such as polyurethane and nitrocellulose. These products contain volatile organic compounds. This study examines performance of alternative and commercial wood fillers. The alternative wood fillers were made from the mixture of putty powder and organic resins, i.e. shellac, acrylic and polyvinyl acetate. The wood fillers were tested on tusam, jabon and rubber wood by assessing their physical, mechanical and chemical performances in comparison with the most commercial wood filler, i.e. nitrocellulose wood filler. Samples of three wood species were treated by spreading them with various wood filler solutions. Weight and dimensional changes due to treatment were determined in wet and dry sample conditions. Chemical and scratch resistance of the wood filler films were also tested to determine their chemical and mechanical performance. Color similarity of the wood filler treated samples and control were evaluated using the CIELab color system. The effect of treatment were varied according to wood species. Tusam samples possess greater weight and dimensional gains than those of jabon and rubber wood samples. All organic wood filler formula could effectively protect wood from water intrution, comparable to that of the commercial wood filler (WF). The organic wood fillers had higher scratch resistance, less chemical resistance, and better color appearance than the commercial WF.]]>
<![CDATA[POTENSI ANTIOKSIDAN DAN SIFAT SITOTOKSIS EKSTRAK KULIT KAYU SEMBILAN JENIS TUMBUHAN DARI TAMAN NASIONAL LORE LINDU ]]>
<![CDATA[Saefudin]]>;
<![CDATA[Efrida Basri]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 34 No. 2 (2016): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2016.34.2.137-145
<![CDATA[Bark extracts of nine plant species from Lore Lindu National Park (NP) had been studied for the antioxidant potential and their cytotoxic effects. The antioxidant activity was tested by determining the peroxidevalue (POV) using the iodometric method. The toxicity test was done by counting the death of shrimp larva (Artemia salina) using Brine Schrimp Lethality Test (BSLT) method. The test results showed three bioactive components (saponin, flavonoid, and polyphenol) were mostly obtained fromthe 3 plant species that have low POV, namely Dysoxylum gaudichaudianum, Gardenia augusta, and Nauclea orientalis. The most striking of cytotoxic effects (LC50< 200 μg/ml) were found from Koordersiodendron pinnatum (170.86 μg/ml), Nauclea orientalis (182.89 μg/ml), and Kleinhovia hospita (191.35 μg/ml) extracts.]]>
<![CDATA[SIFAT DASAR KAYU JATI PLUS PERHUTANI DARI BERBAGAI UMUR DAN KAITANNYA DENGAN SIFAT DAN KUALITAS PENGERINGAN ]]>
<![CDATA[Efrida Basri]]>;
<![CDATA[Imam Wahyudi]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 31 No. 2 (2013): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2013.31.2.93-102
<![CDATA[Jati Plus Perhutani (JPP) is a fast growing trak (Icctona grandis 1.f.) species that bas been developed since 20 years ago iry Research and Development Center of Perum Perhutani through a serial program of tree improvement. At the same age, stem diameter ameter of this superior trak tree is larger than that of the conventional trak. However, wood behavior during kiln drying bas net been much studied. This study excaminad drying property and quality of 5,7 and 9 year old of JPP woods in relation to their wood basic properties. Results showed that basic properties of JPP wood are inferior compared than those of conventional trak wood. Drying property and quality are affected significantly by cell wall thickness, juvenile wood portion, heartwood-tapwood percentage, MEA, initial moisture content, wood density and specific gravity, as well as growth stresies. Compared to those of conventional teak wood with similar in diameter (ulder tree), drying quality of JPP wood until 9 year-old was still poor and unfavorable. Based on the drying, quality and specific condition of the PP wood, the minimum maccimum drying temperature aus around of 30-40°C for 5 yarald, 40-50°C for 7 year old and-40-600°C for 9 year old.]]>
<![CDATA[STABILISASI DIMENSI KAYU JATI CEPAT TUMBUH DAN JABON DENGAN PERLAKUAN PEMADATAN SECARA KIMIA ]]>
<![CDATA[Efrida Basri]]>;
<![CDATA[Jamal Balfas]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 33 No. 4 (2015): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2015.33.4.315-327
<![CDATA[In general, wood from plantation forests are dimensionally unstable, therefore, timber use are limited. T s his paper observes dimensional stability of chemically densified fast-growing teak (JCT) and jabon woods. JCT and jabon woods were impregnated using a mixture of old teak sawdust extracts and resin. The resin used were vinyl acrylic and polyvinyl acetate in three concentrations : 8, 10, and 12% (w/ v), and two compositions of resorcinol resin. Results show that in general, dimensions of the impregnated wood are more stable than non-impregnated wood. Wood impregnated with the mixture of teak extract solution and resorcinol resin shows better dimentional stability than other resins.]]>
<![CDATA[PENGARUH UMUR POHON TERHADAP SIFAT DASAR DAN KUALITAS PENGERINGAN KAYU WARU GUNUNG (Hibiscus macrophyllus Roxb.) ]]>
<![CDATA[Efrida Basri]]>;
<![CDATA[T.A. Prayitno]]>;
<![CDATA[Gustan Pari]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 30 No. 4 (2012): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2012.30.4.243-253
<![CDATA[This study examines wood properties as the indicator of waru gunung wood quality based on age and axialdirectionand their implication on drying quality. Wood samples used in this study collected from three ages, i.e. 8, 12, and16years.Thesamples were arranged in axial direction of the tree stem,namely, bottom, middle, and top portions. The basicproperties of the wood observed i.e. fiber length, specific gravity (SG), and wood shrinkages for each axial portions wereobserved in radial direction from near pith, central and near bark. Fiber length measurements were undergoneusingprocedure practiced at the Centerfor Research and Development on Forestry Engineering and Forest ProductsProcessingBogor. Specific gravity and shrinkage were determined in accordance with the modified ASTM D143-94, meanwhiledrying properties and qualitieswere observed using the modified Terazawa method.Results revealed that thefiber length and SG of waru gunung were affected by tree ages, andposition of the tree stemin both axialand radial directions. Considering basic propertiesand dryingqualities of the series wood aging, itturned out that wood with tree age of 16 years could comply with the requirementsforfurniture material.]]>
<![CDATA[KUALITAS KAYU LAMINASI DENGAN PEREKAT TANIN DARI EKSTRAK KULIT KAYU MAHONI ]]>
<![CDATA[Adi Santoso]]>;
<![CDATA[Efrida Basri]]>;
<![CDATA[Jamal Balfas]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 38 No. 3 (2020): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2020.38.3.151-160
<![CDATA[Chemical components of polyphenols extraction products from mahogany wood (Swietenia macrophylla) andcopolymerized with resorcinol and formaldehyde in alkaline condition, resulting in a resin that can be used as an adhesive.This paper presents the use of tannin from mahogany bark extract copolymer as laminated wood adhesives. Researchmethods include adhesive formulations, testing of the physical-chemical properties of adhesives, manufacture and qualitytesting of the laminated products, and data analysis. The treatments imposed in this study were adhesive formulations,wood species used as raw materials, and types of products made. The results show that the copolymerized tannin extractfrom mahogany bark could be used as an adhesive in making laminated wood beams (glulam) and laminated boardsof the three wood species i.e. tusam (Pinus merkusii), jabon (Anthocephalus cadamba), and sengon (Falcatariamoluccana). The bonding quality and mechanical properties of both types of laminated products were comparable withthose of similar products glued with the imported exterior adhesive with low formaldehyde emission, and classified as F** or F *** with the adhesive ratio of T:R:F = (1:0.025:0.1)%, and T:K:F = (1:0.03:0.1)%.]]>
<![CDATA[KARAKTERISTIK FISIS DAN MEKANIS GLULAM JATI, MANGIUM DAN TREMBESI ]]>
<![CDATA[Nurwati Hadjib]]>;
<![CDATA[Abdurachman]]>;
<![CDATA[Efrida Basri]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 33 No. 2 (2015): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2015.33.2.105-114
<![CDATA[This paper studies the physical and mechanical characteristics of the glued-laminated (glulam) beams made from small diameter of three fast growing species i.e. teak (Tectona grandis L.f), mangium (Acacia mangium Willd.) and trembesi/monkeypod (Samanea saman Merr.) using water based polymer isocyanate (WBPI) as a binder. Six plies of wood combination species were laminated into final dimension of 6 cm × 12 cm × 300 cm. Each laminate was graded using Machine Stress Grading (Pantek, plank sorter) to determine its Modulus of Elasticity (MOE). Cross-section of two type of glulam beam was 6 cm × 12 cm, arranged of various widths and based on values of laminate MOE. Results show that the average and range value of the glulam density were 0.658 g/cm³ and 0.557-0.821 g/cm³, with the moisture content of 14.6% (13-16.8%). The average of the glulam modulus of elasticity and modulus of rupture were 75.51 (37.016-120.446) kg/cm² and 494 (145-750) kg/cm² respectively. The glulam made from teak has better MOE and MOR performances compared to those of mangium and trembesi. In general, the results showed that almost all of glulam beams tested meet requirement of JAS (Japanese Agricultural Standard) 2007 for structural glulam in moisture content, MOE, MOR, and shear strength. The glulam qualities can be classified into E65-E95-F225-F270, except for several species combination beams. Based on the strength classified and the ratio of S/W, the glulam can be used as a construction material except glulam teak-trembesi (preserved or unpreserved) and the unpreserved trembesi-trembesi. The three types of glulam can be utilized for the lightweight construction.]]>
<![CDATA[IMPREGNASI EKSTRAK JATI DAN RESIN PADA KAYU JATI CEPAT TUMBUH DAN KARET ]]>
<![CDATA[Efrida Basri]]>;
<![CDATA[Jamal Balfas]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 32 No. 4 (2014): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2014.32.4.283-296
<![CDATA[Previous research findings have shown that the fast grown teak (JCT) has lower physical, mechanical and durability performances than those of the traditional teak. Hence, a specific effort is required to increase the JCTquality. This research is aimed to improve the quality of JCT and rubber wood through impregnation of extracts and resin.This study used extracts from traditional teak wood sawdust dissolved in methanol solution. The teak extractive solutions were then impregnated into wood structure of JCT and rubber wood with various solution concentrations according to additional organic resin. The organic resins used in this study consist of shellac and damar, which were added at three weight concentration levels of 4, 6 and 8% of the extract volume. The results show that the impregnation of extractive solution into JCT and rubber wood increased dimentional stability of both woods with Anti Shrink Efficiency (ASE) value exceeds 50%, compared to the traditional teak. The addition of shellac and damar resin in the teak extractive solution significantly result in better dimensional stability of both treated woods proportionally in accordance to the resin concentration.]]>
<![CDATA[HONEYCOMBING AND DEFORMATION OF SIX WOOD SPECIES AND THEIR RELATIONSHIP WITH SEVERAL PHYSICAL PROPERTIES ]]>
<![CDATA[Karnita Yuniarti]]>;
<![CDATA[Efrida Basri]]>;
<![CDATA[Abdurachman]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 35 No. 2 (2017): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2017.35.2.115-122
<![CDATA[It is presumed that the wood susceptibility to drying defects is related to several physical properties. This paper examines the drying defects: honeycombing and deformation of six wood species (trema, fast growing teak, bayur, jabon, angsana and lamtoro) during high temperature drying and analyses their relationship with initial moisture content, T/R shrinkage ratio and density. Terazawa method was used to examine the defect during high temperature drying. Result shows that after high temperature drying, lamtoro suffers the worst honeycombing (level 4-6), and fast growing teak deforms severely (level 4-6). Regression analysis shows multiple regression models using all physical properties as predictors provides better estimation on deformation and honeycombing than single-predictor regression models. The multiple regression model for each defect could explain 57.52% and 39.46% of variation in deformation and honeycombing, respectively.]]>
<![CDATA[SIFAT FISIS DAN PENGERINGAN LIMA JENIS BAMBU ]]>
<![CDATA[Efrida Basri]]>;
<![CDATA[Rohmah Pari]]>
<![CDATA[ Jurnal Penelitian Hasil Hutan Vol. 35 No. 1 (2017): Jurnal Penelitian Hasil Hutan ]]>
Publisher : <![CDATA[BRIN Publishing ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.20886/jphh.2017.35.1.1-13
<![CDATA[Information regarding physical properties of bamboo is essential for interpreting its dimensional stability, while drying properties are needed as a basis in determining the optimum drying temperature. This research was aimed to investigate the effect of bamboo species and position at the culm on physical properties, as well as drying properties of five bamboo species i.e. temen bamboo (Gigantochloa verticillata Munro), ori (Bambusa blumeana Bl. ex Schult.f.), ater (Gigantochloa atter (Hassk.) Kurz ex Munro), ampel (Bambusa vulgaris Schrad.), and peting (Gigantochloa levis (Blanco) Merr.). Physical properties were tested by measuring diameter and thickness of bamboo culms. Determination of drying temperature was carried out in accordance with wood drying method and followed by observing visual defects, i.e. deformation (concave & wrinkle) and end/node split. Assessment results revealed that there were close relationships between green moisture content of bamboo and their density as well as their culm shrinkage. Based on bamboo drying properties (bottom-middle portions), the optimum drying temperatures (initial and final temperature) for temen and ori were occurred at 45 – 70°C, ampel and ater were occurred at 40 – 60°C, while the optimum drying temperature for peting were at 33 – 50°C]]>
