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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu dan Teknologi Hasil Hutan Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan Jurnal Teknik Sipil Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Penelitian Hasil Hutan Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Sylva Lestari Jurnal Ilmu Kehutanan Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan

Trisna PRIADI

Departement Of Forest Products, Faculty Of Forestry And Environment, IPB University, Dramaga 16680, Bogor, Indonesia

Author-ID : 346951

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Sifat Fisis Dan Mekanis Kayu Dari Hutan Rakyat Dalam Uji Biodeteriorasi Di Beberapa Daerah Bagian Barat Pulau Jawa Trisna Priadi
Jurnal Teknik Sipil Vol 26 No 3 (2019)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2019.26.3.6

Abstrak Penggunaan kayu dari hutan rakyat untuk bangunan dan furnitur semakin banyak. Oleh karena itu, penelitian ini bertujuan untuk mengevaluasi sifat fisik dan mekanik kayu setelah uji biodeteriorasi alami tanpa menyentuh tanah di empat kota berbeda di bagian Barat Pulau Jawa. Kayu yang digunakan dalam penelitian ini sengon, nangka, mangium, mahoni dan kamper. Uji biodeteriorasi kayu tidak menyentuh tanah dilakukan di Bogor, Tanjung Priok, Lembang, dan Serang. Sifat fisik dan mekanik kayu diuji setelah uji lapang biodeteriorasi tersebut. Hasil penelitian menunjukkan bahwa penurunan berat kayu, berat jenis, modulus elastisitas dan modulus patah dari contoh uji kayu bervariasi di antara berbagai jenis kayu dan tempat uji. Degradasi tertinggi terjadi pada kayu sengon, sedangkan degradasi kayu mangium dan mahoni lebih tinggi daripada kayu nangka dan kamper. Sifat fisik dan mekanik kayu yang diuji di Bogor yang bercurah hujan tinggi dan bersuhu hangat lebih buruk daripada kayu yang diuji di tempat -tempat lainnya.Abstract The use of woods from community forests for building and furniture are increasing. Therefore, this study aimed to evaluate the physical and mechanical properties of woods exposed to above ground biodeterioration test in four different cities in the West part of Java Island. The woods used in this study were sengon, jackfruit, mangium, mahogany and camphor. Above ground biodeterioration test of the woods were conducted in Bogor, Tanjung Priok, Lembang, and Serang. The physical and mechanical properties of the woods were tested after the biodeterioration test. The results showed that the weight loss, specific gravity, modulus of elasticity and modulus of rupture of the woods were different among wood species and exposure palces. The highest degradation occurred in sengon wood, while degradation of mangium and mahagoni woods were higher than that of nangka and kamper woods. The physical and mechanical properties of the woods exposed in Bogor with high rainfall and warm temperature were worse than the woods exposed in the other places.

Sudut Kontak dan Keterbasahan Dinamis Kayu Samama pada Berbagai Pengerjaan Kayu Tekat Dwi Cahyono; Imam Wahyudi; Trisna Priadi; Fauzi Febrianto; Syarif Ohorella
Jurnal Teknik Sipil Vol 24 No 3 (2017)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2017.24.3.3

AbstrakSudut kontak dan keterbasahan dinamis penting diketahui untuk menganalisis keteguhan rekat. Penelitian ini bertujuan mengetahui sudut kontak dan keterbasahan dinamis kayu samama pada berbagai pengerjaan kayu. Metode yang digunakan adalah meneteskan air destilata, perekat UF dan isosianat dengan ukuran tertentu pada permukaan kayu hasil gergaji dan hasil mesin kupas. Permukaan kayu gergajian yang ditetesi oleh cairan adalah permukaan radial, tangensial dan permukaan yang membentuk sudut 45° antara radial dan tangensial. Sementara itu permukaan finir hasil pengupasan adalah permukaan tight dan loose. Kayu gergajian maupun finir yang dianalisis pada penelitian ini, keduanya diambil dari bagian juvenil dan dewasa. Keterbasahan dinamis dianalisis menggunakan model SD. Hasil penelitian menunjukkan bahwa porositas permukaan bahan berpengaruh terhadap keterbasahan kayu samama oleh cairan. Permukaan tangensial memiliki sifat yang lebih mudah mengalami keterbasahan dibandingkan dengan permukaan radial maupun TR (permukaan antara radial dan tangensial) sementara bagian juvenil memiliki tingkat keterbasahan lebih baik dibandingkan dewasanya. Finir samama memiliki tingkat keterbasahan setara dengan permukaan TR kayu samama dimana bagian juvenil finir memiliki laju keterbasahan yang lebih baik dibandingkan dengan finir dewasa. Disamping itu, bagian loose finir lebih cepat terbasahi oleh cairan dibandingkan bagian tight.AbstractContact angle and dynamic wettability is important in determining bonding strength, therefore, this study addressed contact angle and dynamic wettability of samama wood in various woodworking. Method used in the study was by dripping distill water, UF and isocyanate adhesives in particular size on the surface of wood processed by circular saw and peeling machine. The surfaces of sawn wood which dripped by those liquids were radial, tangential, and surface which made a 45° angle between radial and tangential. Meanwhile the tested surfaces of peeled-veneer were tight and loose surfaces. Both sawn wood and veneer in this study were taken from juvenile and mature part of the samama wood. Dynamic wettability was analyzed using SD model. The results showed that porosity of the surface significantly affected the wettability of samama wood by liquid. The profile of tangential surface made it had a better wettability than radial and TR (i.e. surface between radial and tangential) surfaces. Meanwhile, juvenile part showed better wettability than the mature one. The samama veneer had equal wettability with TR surface of sawn wood in which the juvenile one showed better wettability than the mature veneer. Further, it was noticed that loose surface of the veneer was wetted faster than the tight one.

EVALUASI CACAT PENGERINGAN DAN PEMESINAN PADA EMPAT JENIS KAYU CEPAT TUMBUH TERMODIFIKASI PANAS Ulfa Adzkia; Trisna Priadi; Lina Karlinasari
Jurnal Penelitian Hasil Hutan Vol 37, No 3 (2019): 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.2019.37.3.204-216

Perlakuan panas merupakan salah satu metode yang dapat meningkatkan kualitas kayu termasuk untuk kayu cepat tumbuh. Namun perlakuan tersebut dapat menyebabkan cacat pengeringan serta perubahan sifat pemesinan setelah perlakuan panas. Tujuan penelitian ini untuk mengevaluasi pengaruh variasi jenis kayu dan waktu pemanasan terhadap adanya cacat pengeringan dan pemesinan kayu cepat tumbuh. Jenis kayu cepat tumbuh yang digunakan adalah jati, mangium, jabon dan sengon. Perlakuan panas dilakukan pada suhu 165ºC dengan variasi waktu 0 jam (kontrol), 2 jam dan 6 jam. Hasil penelitian menunjukkan bahwa kadar air dan kerapatan kayu menurun setelah perlakuan panas. Perlakuan panas berhasil menurunkan kadar air 57% dan menyebabkan penurunan kerapatan kayu hingga 20% dibandingkan dengan kayu kontrolnya. Cacat pengeringan retak ujung pada jati, mangium, jabon dan sengon meningkat setelah perlakuan panas selama 2 dan 6 jam. Di sisi lain, cacat retak permukaan pada jati, mangium, sengon dan jabon berkurang. Cacat setelah menerapkan kegiatan pemesinan yaitu cacat pengamplasan, penyerutan, pembentukan, dan pengeboran menurun pada jati, mangium, jabon dan sengon setelah perlakuan panas 2 dan 6 jam. Jati adalah spesies kayu terbaik dalam hal kualitas pemesinan setelah perlakuan panas diikuti oleh jabon, mangium, dan sengon. Pada suhu 165°C dalam 2 jam dianggap sebagai waktu yang tepat untuk perlakuan panas dalam hal memperoleh cacat minimal pengeringan dan pemesinan.

Natural Durability and Preservative Treatability of Mangium, Manii and Sengon Woods by Cold Soaking and Hot-Cold Soaking Methods Trisna Priadi; Gendis A Pratiwi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The understanding of the natural durability and preservative treatability of woods from community forests/lands is paramount to prevent biodeterioration of the woods in its utilization. This research was aimed to determine the natural durability of community woods (mangium, manii, and sengon) against subterranean termites (Coptotermes curvignatus) and dry wood termites (Cryptotermes cynocephalus), and to determine their preservative treatability with Diffusol CB applied through cold soaking and hot-cold soaking preservation methods. The results showed that manii and mangium woods were more resistant from subterranean termites and dry wood termites compared to that of sengon wood. The penetration and retension of Diffusol CB by Hot-cold preservation were twofold of that by cold soaking preservation. Penetration and retension of preservative in sengon wood was the highest, more than threefold of those in mangium (the lowest preservative treatability).Keywords: dry wood termite, natural durability, preservative treatability, subterranean termite

The Change of Wood Acidity during Drying Process Deded S Nawawi; Trisna Priadi; Benny Murwentiano
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Wood acidity is an importance factors in the wood processing and utilization. The acidity of wood might change due to some factors such as moisture, drying, and storage time of wood. The wood acidity of two wood species; sengon (Paraserianthes falcataria) and manii (Maesopsis eminii) and its change by drying process were investigated with respect to pH value and buffering capacity. Drying of wood was carried out on 28 and 60 oC for 24, 48, 72 and 144 h, respectively. The drying of wood was able to change of wood acidity. The acidity of wood increased by increasing the drying temperature and time. On the temperature of 60 oC, a lower pH value and higher bufering capacity of wood were obtained for longer time of drying. Manii wood was more acidic than that of sengon wood.Key words: bufering capacity, pH value, wood acidity, wood drying

Karakteristik Perubahan Warna dan Kekerasan Kayu Termodifikasi Panas pada Berbagai Suhu dan Jenis Kayu (Color Changes and Hardness Properties of Thermally Modified Wood at Various Temperatures and Wood Species) Lina Karlinasari; Fengky S Yoresta; Trisna Priadi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Thermally modified wood by heat treatment are conducted to improve wood quality through high temperature application dealing with to increase dimensional stability and biological durability. However, this treatment can decrease others properties such as mechanical properties and color changes. The aim of this study was to evaluate the color changes as well as hardness properties which undergone heat treatment. Sengon (Paraserianthes falcataria), jabon (Anthocephalus cadamba), and mangium (Acacia mangium) wood species were heat treated at temperature 120, 150, and 180 °C for duration 2 and 6 h. Pretreatments were carried through natural drying and kiln dryer at low temperature 40 °C. The result showed that the temperature and duration of heat treatment were effected on color changes to become darken mainly in jabon and mangium wood. Heat treatment at three temperature which subjected to the samples was not influenced significantly on hardness properties. Pretreatment maintained the moisture content stability but not influenced on wood properties tested.

Profil Suhu dan Kadar Air Kayu dalam Pengeringan Oven Pemanas dan Gelombang Mikro (Temperature and Moisture Content Profiles of Woods in Heating and Microwave Ovens Drying) Trisna Priadi; Gunes T W Giyarto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 17, No 2 (2019): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/jitkt.v17i2.517

This research aimed to evaluate the profile of temperature and moisture content in Pinus oocarpa wood being dried with heating oven and microwave oven. The size of samples were (25x70x120) mm3. The temperature profiles in heating oven and microwave oven drying were taken every 10 minutes and 0.5 minutes, respectively. The moisture profiles in heating oven and microwave oven drying were made in every 24 hours and 10 minutes, respectively. The heating oven was set at 60 °C, while microwave oven was set for 2 minutes intermittently with 5 minutes break. In microwave drying, the temperature inside the boards increased faster and higher compared to that in the heating oven, which resulted in a faster moisture movement to the board’s surface. The drying rate of pine increased 48-72 times in microwave compared to that in heating oven. The moisture content in the centre of boards being dried in heating oven was much higher than that of in the outer parts. On the other hand, the moisture profile in the woods being dried in microwave oven distributed more evenly.

Anatomical Properties of Flindersia pimenteliana F. Muell from Wondama Bay West Papua Renny Purnawati; Imam Wahyudi; Trisna Priadi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Anatomical properties of Flindersia pimenteliana F. Muell wood from natural forest in Wondama Bay, West Papua was studied in order to analyze its general characteristic, anatomical structure and fiber quality. The microtome slides were prepared according to the Johansen's method, while the anatomical features observed according to the International Anatomist Wood Association (IAWA) List. The results showed that F. pimenteliana wood has decorative figure, white sapwood to pinkish and reddish brown heartwood, fine texture, straight grain, lustrous, good smell, moderately soft and light. The main characters of this species were growth ring indistinct, diffuse porous, simple perforation plate, vessels solitary and in radial multiples of 2-4 cells, inter vessel pits alternate, minute, vessel-ray pits with distinct borders, similar to inter vessel pit in size and shape,white deposit present in pores, axial parenchyma diffuse, scanty paratracheal and vascicentric, rays width 1-3 cells, prismatic crystals present in chambered axial parenchyma cells. Fiber length, diameter and wall thickness were 1,120.51, 19.22, and 2.66 μm, respectively. Fiber quality of F. pimenteliana could be classified into quality class II. Based on these properties, it could be recommended that this wood is suitable for wood craft, furniture, and cabinet work.Key words: anatomical structure, fiber quality, Flindersia pimenteliana, microtome slides

The Alleviation of Discoloration in Teak (Tectona grandis L.f.) Wood Through Drying and Chemical Treatments Efrida Basri; Dede Rohadi; Trisna Priadi; Imam Wahyudi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 2, No 1 (2004): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Teak wood is well known as one of the important wood species from Indonesia. The properties of this wood are quite good and delighted by many people. However, the wood processing may cause discoloration on some pieces or boards of this wood. This degrades the wood performance. The wood surface is slightly darkened. Dark-brown streaks often arise distinctly on the brown color of wood surface. Moreover, when the kiln-dried wood is re-exposed in the further process with a planner or a molder, the discoloration may still exist. The aim of this study was to find out an appropriate technique to alleviate discoloration on teak wood. The result showed that drying temperature was the most important factor in the discoloration of teak wood. Among chemical treatments in this experiment, the use of 3% Na2SO3 solution was the most effective way to alleviate discoloration on teak wood

Kualitas Kayu Lapis dari Finir Bagian Juvenil dan Dewasa Samama (The Quality of Plywood Made from Juvenile and Mature Wood Veneer of Samama Tekat D Cahyono; Imam Wahyudi; Trisna Priadi; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 2 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study designed 7 types of plywood that were arranged by juvenile and mature part of samama (Anthocephalus macrophyllus) wood, The adhesive used was urea formaldehyde with addition of hardener (NH4Cl) in ratio of 100:1 (weight/weight). The adhesive was applied on both surfaces of core veneer, which were loose and tight surfaces, with glue spread was 150 g m-2. The veneers were arranged in accordance with the research design and the resulted structures were then hot pressed at 110 C for 30 seconds per mm of the plywood’s thickness. The pressure was 10 kg cm-2. The results showed that bonding strength of plywood made from juvenile samama veneer was lower than that of the mature one, although the value was still met SNI standard for type I interior plywood. Furthermore, plywood’s moisture content was also met the requirement of the standard. Plywood density was increased by 11-12% from that of the wood. These findings suggest the suitability of both juvenile and mature wood of samama for the material of good quality plywood. Further studies on determination of other veneer-based products, such as laminated veneer lumber (LVL), were then recommended.Keywords: juvenile, mature, plywood, samama, urea formaldehyde

Co-Authors A.A. Ketut Agung Cahyawan W Achmad . Agus Ismanto Agus Ismanto Arif Budi WITARTO Arizal Sani Badruzzaman, Muhammad Hilmy Benny Murwentiano Dede Rohadi Deded Sarip Nawawi Dodi Nandika Efrida Basri Fauzi Febrianto Fengky Satria Yoresta Fitriyanti Kaliky Gendis A Pratiwi Gunes T W Giyarto Imam Wahyudi Indrawan, Imam Wahyudi Ismail, Rohmat Istie Rahayu Kurnia Sofyan La Djumat, Juni Lina Karlinasari Noviyanti, Eka Nurul Chotimah Nurul Chotimah Pangestu, Lilih Cipta Prayogo, Yanico Hadi Prihatini, Esti Purnawati, Renny Putra, Guruh Sukarno Saputri, Egydia Silva D. Maretha Syarif Ohorella Tekat D Cahyono Tekat Dwi Cahyono Ulfa Adzkia Ulfa Adzkia Wahyuningtyas, Irma Wardhani, Miranti Kusuma

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