Garuda - Garba Rujukan Digital

Struktur Anatomi dan Kualitas Serat Kayu dan Akar Gantung Beringin (Ficus benjamina Linn.) . Krisdianto; Jamal Balfas
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 1 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Beringin (Ficus benjamina Linn.) is one of typical fast growing tree species which are commonly found in Indonesia. The trees grow with hanging roots which grow larger and often can merged with the main stem, then its timber is not optimally utilized. This paper studies the anatomical structure and fiber quality of main stem and large, medium, and small diameter of hanging roots of beringin (Ficus benjamina Linn.) tree. Anatomical structure was observed macroscopically and microscopically, while fiber dimensions were measured from macerated samples. The results show that the anatomical structure pattern of the roots is similar with those of main stem, however the quantity and dimension of anatomical components of hanging roots are smaller and shorter than components of main stem. Likewise, the fiber dimensions of roots are shorter and thinner than those taken from the main stem. Based on fiber dimensions and its derivative value, beringin wood fibers are classified into class quality II for pulp and paper. The creamy white color with white streaky figure of beringin wood from main stem is recommended for indoor decoration products such as wooden venetian blind, while the small roots are recommended for strap or webbing material crafts.

SIFAT PEMESINAN 34 JENIS KAYU DARI MALUKU & SULAWESI TENGAH Osly Rachman; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1985.2.3.27-36

The machining properties of 34 wood species tested according to the ASTMD 1666-64 procedure are presented in this paper. The machining properties studied were planing, shaping, turning, sanding, boring and mortising.Some of the species tested (such as suling, gohimahou etc.) are consistently better than average in most respects and some are consistently poorer (such as telor, andolia etc.). Some are good in one property or two and poor in others. These differences are probably due to differences in the specific gravity values of each species

SIFAT PEMESINAN 36 JENIS KAYU DARI DAERAH IRIAN JAYA Osly Rachman; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1987.4.1.1-11

This article presents test results of the machining properties of 36 wood species from Manokwari, lrian Jaya. The test method used was the modified ASTM D-1666 described in Forest Products Research Institute Report No.160 (1982). In most of the species 25 or more samples were available for test. All test material was dried to equilibrium Moisture content condition (15 to 18% moisture content). The machining properties that were investigated were planing, shaping, boring, mortising, turning and sanding.Some of the species tested are consistenly better than average in most respects. The species have good machining properties are sehiega.koesigoro, seyam, matoa, kerbai and petian. Whereas some species, such as fofo, sehiye, wafut, basuoh, serakka and bimiek are consistently poorer. The others species are good in some properties and fair or poor in others.

KAJIAN EFISIENSI PEMANFAATAN KAYU MERBAU DAN RELOKASI INDUSTRI PENGOLAHANNYA Bagian 1: Propinsi Papua Sebagai Penghasil Kayu Merbau dan Tujuan Relokasi Jamaludin Malik; Osly Rachman; Jamal Balfas; Achmad Supriadi
Jurnal Analisis Kebijakan Kehutanan Vol 2, No 1 (2005): JURNAL ANALISIS KEBIJAKAN KEHUTANAN
Publisher : Centre for Research and Development on Social, Economy, Policy and Climate Change

Kayu Merbau (Intsia spp.) pernah menjadi isu penting karena Pemerintah Propinsi Papua meminta dispensasi dari Pemerintah Pusat untuk mengekspor log kayu tersebut. Argumentasi yang dikemukakan adalah kekerasan kayu tersebut, sehingga tidak bisa diolah di dalam negeri. Apabila tidak diekspor berarti sumberdaya alam yang dimiliki Propinsi Papua tidak dimanfaatkan secara optimal untuk pembangunan daerah. Sementara itu, Inpres No. 7 tahun 2002 menawarkan paket relokasi industri dari wilayah Jawa Timur ke Papua. Untuk mengevaluasi kondisi obyektif pemanfaatan kayu merbau dan urgensi relokasi industrinya, dilakukan kajian ilmiah komprehensif yang meliputi potensi bahan baku, alokasi penggunaan, tenaga kerja dan peraturan yang terkait dengan pemanfaatan kayu merbau. Tulisan ini dibagi menjadi dua bagian. Bagian pertama, kajian difokuskan terhadap wilayah Papua sebagai sumber bahan baku dan tempat tujuan relokasi industri pengolahan kayu merbau, mencakup pengumpulan data dilakukan melalui observasi dan wawancara dengan instansi terkait di wilayah Jakarta, Banten dan Papua. Bagian kedua akan disajikan pada tulisan terpisah, yang akan mengkaji industri kayu merbau di Jawa Timur dan sekitarnya yang akan direlokasi. Hasil observasi di Papua diketahui bahwa potensi kayu merbau yang dapat dimanfaatkan masih cukup 3besar , yaitu 2,662 juta m/tahun. Untuk menunjang pengelolaan hutan lestari, perlu dilakukan perhitungan ulang atas potensi kayu. Di Papua terdapat 9 industri besar yang mengolah kayu merbau dan 66 unit industri kecil/menengah yang mengalami kekurangan bahan baku kayu merbau. Sebagian besar industri mengolah kayu merbau menjadi kayu gergajian, S2S dan S4S. Banyak kilang penggergajian kecil di areal hutan menggergaji kayu bulat merbau menjadi balok kasar dengan menggunakan gergaji rantai. Evaluasi terhadap data dan informasi yang tersedia dapat disimpulkan bahwa relokasi industri bukan merupakan alternatif yang tepat. Pembinaan yang lebih tepat adalah peningkatan kemampuan teknis industri dan pemasaran kayu merbau di Papua, sehingga mampu memproduksi barang jadi (finished products) dan langsung dapat memasarkannya.

SIFAT PEMESINAN 34 JENIS KAYU DARI MALUKU & SULAWESI TENGAH Osly Rachman; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1985.2.3.27-36

The machining properties of 34 wood species tested according to the ASTMD 1666-64 procedure are presented in this paper. The machining properties studied were planing, shaping, turning, sanding, boring and mortising.Some of the species tested (such as suling, gohimahou etc.) are consistently better than average in most respects and some are consistently poorer (such as telor, andolia etc.). Some are good in one property or two and poor in others. These differences are probably due to differences in the specific gravity values of each species

SIFAT PEMESINAN 36 JENIS KAYU DARI DAERAH IRIAN JAYA Osly Rachman; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1987.4.1.1-11

This article presents test results of the machining properties of 36 wood species from Manokwari, lrian Jaya. The test method used was the modified ASTM D-1666 described in Forest Products Research Institute Report No.160 (1982). In most of the species 25 or more samples were available for test. All test material was dried to equilibrium Moisture content condition (15 to 18% moisture content). The machining properties that were investigated were planing, shaping, boring, mortising, turning and sanding.Some of the species tested are consistenly better than average in most respects. The species have good machining properties are sehiega.koesigoro, seyam, matoa, kerbai and petian. Whereas some species, such as fofo, sehiye, wafut, basuoh, serakka and bimiek are consistently poorer. The others species are good in some properties and fair or poor in others.

SINTESIS, KARAKTERISASI DAN APLIKASI BIO-IMPREGNAN DARI KULIT BATANG SAWIT Jamaludin Malik; Adi Santoso; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol. 40 No. 2 (2022): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2022.40.2.93%E2%80%93104

The formulation of phenolic compounds extracted from biomass not only produces adhesives but can also be used as bioimpregnant. In this study, the synthesis was carried out by copolymerization of resorcinol (R) and formaldehyde (F) into the oilpalm bark extract (S) to produce SRF resin fluid. A complete characterization was carried out using FTIR, Py-GCMS, XRDand DTA. In addition, F emission was also undertaken to ensure its safety for health and the environment. The application ofbio-impregnant was done on samples of the hard (edge) and soft (middle) parts of the oil palm trunk. The results show that the oilpalm bark extract contains polyphenol components that have a strong affinity for resorcinol and formaldehyde in alkaline catalyst(NaOH 40%), so that it can form a copolymer that can be used as an impregnant. The application of the bio-impregnant canimprove the quality of the oil palm trunk in both parts from class V to class III of wood-strength classification with an increase indensity (>100%), hardness (4 times), thickness swelling in both cold and boiling water meets the requirements (<25%), as wellas formaldehyde emission that meets the standard SNI 03-2105-2006.

10.20886/jphh.2018.36.2.129-138 Jamal Balfas; Efrida Basri; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol. 36 No. 2 (2018): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2018.36.2.113-128

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.

STABILISASI DIMENSI KAYU JATI CEPAT TUMBUH DAN JABON DENGAN PERLAKUAN PEMADATAN SECARA KIMIA Efrida Basri; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol. 33 No. 4 (2015): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.4.315-327

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.

KUALITAS KAYU LAMINASI DENGAN PEREKAT TANIN DARI EKSTRAK KULIT KAYU MAHONI Adi Santoso; Efrida Basri; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol. 38 No. 3 (2020): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2020.38.3.151-160

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)%.

Title

Found 17 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 17 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 17 Documents
Search