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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Silvikultur Tropika (JST) Jurnal Ilmu dan Teknologi Hasil Hutan Forum Pasca Sarjana JURNAL HUTAN LESTARI Jurnal Bahan Alam Terbarukan Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan Jurnal Teknik Sipil Jurnal Ilmu dan Teknologi Kayu Tropis PERENNIAL Journal of Sylva Indonesiana 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 HUTAN TROPIS Makara Journal of Science Makara Journal of Technology

Yusuf Sudo Hadi

Departemen Hasil Hutan, Fakultas Kehutanan, Institut Pertanian Bogor, Dramaga Bogor.

Author-ID : 272298

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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The Quality of Zephyr Board Made from Oil Palm Brunch (Eleais guenensis Jacq.) Lusita Wardani; Muhammad Y Massijaya; Yusuf Sudo Hadi; Wayan Darmawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to evaluate the physical, mechanical and durability properties of zephyr board made from oil palm petiole. Urea formaldehyde (UF), phenol formaldehyde (PF) and isocyanate (IC) resins were used to bind zephyrs. Board size produced was (300x300x12) mm3, and target density of zephyr board was set at 0.80 g cm-3. The temperature and pressure of hot pressing were set at 120 °C and 25 kg cm-2 for 20 min. The result showed that physical and mechanical properties of zephyr board fulfilled JIS A 5908-2003. All board density in this experiment did not reach the density target. The moisture content of zephyr board bonded with IC resin was the lowest compared to zephyr board bonded with UF and PF resins. Over all the mechanical properties of zephyr board bonded with UF resin showed the best result in term of modulus of rupture (MOR), modulus of elasticity (MOE), internal bond (IB), and screw resistant (SR) parameters compared with zephyr board bonded with PF and Isocyanate resins. Zephyr board was classified into I-II class for strength class and I-IV class for resistance against dry and subterranean termites, attack respectively.Key words: durability, mechanical properties, physical properties, resin type, zephyr board

Physical and Mechanical Properties of Particleboard Made from Jatropha (Jatropha curcas) Fruit Hulls Reinforced with Wood Particle Apri H Iswanto; Fauzi Febrianto; Yusuf Sudo Hadi; Surdiding Ruhendi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to evaluate the properties of particleboard made from mixtures of jatropha fruit hulls (JFH) and wood particle in several mixture ratios. JFH, and mangium wood (Acacia mangium Wild) particle were untreated and treated with 1% acetic acid solution for 24 h. Urea formaldehyde (UF) resin with 10% resin content (SC: 63%) was used as binder. The ratio of JFH and wood particles were set at 100:0, 70:30, 60:40, 50:50, and 0:100. The target density of particleboard was set at 0.70 g cm-3. The temperature and pressure of hot pressing were set at 130 ºC and 2.544 N mm-2 for 10 minutes. The physical and mechanical properties of particleboard were evaluated according to JIS A 5908-2003 standard. The result indicated that addition of untreated mangium wood particle onto JFH particles improved mechanical properties of board especially modulus of elasticity (MOE) and modulus of rupture (MOR) parameters. However, the internal bond (IB) parameter was found to decrease with addition of wood particle. The higher amount of wood particle added resulted in the better the MOR and MOE parameters. Addition of acetic acid treated mangium wood particle onto JFH particleboard resulted in lower physical and mechanical properties.Key words: Jatropha curcas, fruit hulls, particleboard, wood particle

Stiffness Prediction of 17 Years Aged Mangium (Acacia mangium Willd) By Non-Destructive Testing Dwi J Priyono; Surjono Surjokusumo; Yusuf Sudo Hadi; Naresworo Nugroho
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 1 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Non-destructive test of mechanical properties of wood is an alternative methode which it is done without damaging the wood. The study tried to find the relationship between wood stiffness through non-destructive with MoE estimation. The 17 years mangium wood beam were tested both in the sorts of sample beam and small clear specimen. Beams were tested by ultrasonic wave propagation using Sylvatest- Duo NDT equipment and Panter Timber Sorting Machine, while destructive testing using Shimadzu UTM. The small clear specimen tested using Sylvatest-Duo equipment, while it’s destructive using Instron UTM. Destructive test were according to ASTM D 143-94 (2008) for the small clear specimen (scs), while ASTM D 198-05a (2008) applied for the beam samples. The results showed that the scs sample with 14.7% moisture content and density of 0.61 gr cm-3 have ultrasonic wave propagation velocity (V) of 5,764 m s-1, the dynamic modulus of elasticity (MoEd) and static (MoEs) each for 243,933 and 104,004 kg cm-2, while the value of static flexural strength (MoRs) was 889 kg cm-2. For the beam sorts with 15.4% moisture content and density of 0.58 g cm-3 has a velocity of ultrasonic waves propagation at 4,944 m s-1, the value of MoEd and MoEs respectively 167,357 and 51,780 kg cm-2, while the value of MoRs was 449 kg cm-2. The beam MoRs and MoEs values which resulted by Panter (called MoEp and MoRp) were 146,756 and 538 kg cm-2 respectively. Through simple linear regression equations were discovered relationships on eight prediction equations that can be considered good to use.Key words: beams, MoE-dynamic, MoE-static, non-destructive testing, prediction equation, small clear specimen.

Keefektifan Beberapa Spesies Cendawan Entomopatogen untuk Mengendalikan Rayap Tanah Coptotermes gestroi WASMANN (Isoptera: Rhinotermitidae) dengan Metode Kontak dan Umpan Effectiveness of Some Entomopathogenic Fungi Species as Bio-control Agent to Subterranean Termite Coptotermes gestroi WASMANN (Isoptera: Rhinotermitidae) Using Contact and Baiting Methods Desyanti Desyanti; Yusuf Sudo Hadi; Sulaeman Yusuf; Teguh Santoso
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 5, No 2 (2007): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Species of entomopathogenic fungi, i.e. Metarhizium anisopliae (Metsch.) Sorokin, Metarhizium brunneum Petch, Beauveria bassiana (Bals.) Vuillemin, Fusarium oxysporum Link and Aspergillus flavus Link were tested their effectiveness as bio-control against to subterranean termite Coptotermes gestroi Wasmann. Pure culture of each fungal species was stored in 40C. Before used, those fungi were recultured in Sabouraud Dextrose Agar with Yeast Extract (SDAY) media and incubated in 240C and RH 95% for 3 weeks. The series of conidial density has been used (0, 107, 5x106, 106, 5x105 and 105 conidia/ml) for pathogenicity test. The LC95 of M. brunneum was used for contact and baiting methods and the bioassay was repeated four times. The data was analyzed using ANOVA and with DNMRT. The lethal concentration (LC) and lethal time (LT) were calculated using probit analysis. The results revealed that increase of conidial density of each fungi species caused more mortality of C. gestroi. All fungi species could cause mortality of C. gestroi more than 80% even with the density of 5x106 conidia/ml, however M. brunneum could causing mortality more than 80% at density of conidia as low as 5x105 conidia/ml. Based on the probit analysis, the value of LC50 and LT50 with contact method were calculated at 1.8 x 105 conidia/ml and 2.01 (1.52 ~ 2.40) days respectively.

Surface Quality of Commercially Manufactured Particleboard Panels in Indonesia Salim Hiziroglu; Yusuf Sudo Hadi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 1 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study is an attempt to evaluate surface roughness of commercially manufactured particleboard in Indonesia. Four different types of particleboard panels were used to measure their surface roughness on a stylus type of profilometer. Three roughness parameters, namely average roughness (Ra), mean peak-to-valley height (Rz), and maximum roughness (Rmax) were employed to quantify roughness of the samples. Panel type-D had the roughest surface characteristics with an average Ra value of 14.20 µm while panel type-A had the smoothest corresponding value of 6.13 µm. Panel types C and D had relatively rough surface as compared to surface of typical commercially manufactured particleboard panels due to having large particles on the surface layers. In further studies surface roughness of such samples could be investigated following a sequence of sanding process to improve their surface qualities.

The Physical and Mechanical Properties of Glulam Made from Pine and Jabon Woods Andi SRD Lestari; Yusuf Sudo Hadi; Dede Hermawan; Adi Santoso
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Wood from plantation forests can be used to make glued laminated lumber (glulam) products for structural applications. Wood from two species, namely pine (Pinus merkusii) and jabon (Anthocephalus cadamba), and polyurethane and tannin mahogany adhesives (glue spread 200 g m-2) were used to manufacture glulams. The aim of this research was to determine the physical and mechanical properties of glulam made from pine and jabon woods. Wood densities of pine and jabon were 0.71 and 0.43 g cm-3, respectively. The glulams consisted of three layers of the same wood species, and samples were (3×6×120) cm3 in thickness, width, and length, respectively. The physical and mechanical properties of glulam were tested according to Japanese Agricultural Standard (JAS) 234-2007. The results showed that glulam made from pine met the standard for modulus of elasticity and modulus of rupture (MOR) values. Glulam made from jabon wood fulfilled the standard for MOR, shear strength, and hot- and cold-water delamination tests. In the formaldehyde emission test, jabon glulam fulfilled the F*** (low emission) standard and pine glulam met the F**** (very low emission) standard according to JAS 234-2007.

Distribusi Kandungan Kimia Kayu Kelapa (Cocos nucifera L) Distribution of Chemical Compounds of Coconut Wood (Cocos nucifera L) Isna Yuniar Wardhani; Surjono Surjokusumo; Yusuf Sudo Hadi; Naresworo Nugroho
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 2, No 1 (2004): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Within a tree from base to top (longitudinal) and dermal to core (lateral), the chemical compounds of wood such us celluloses, lignin, holocelluloses, ash content and extractives are different. The distribution should be known to process the wood, including coconut wood, easily and to utilize the wood optimally. The objective of this study was to determine the distribution of chemical compound of coconut wood within a tree. The analysis was conducted according to TAPPI Standard with three replications for each sample. Average values and graphs were use to analyze the results.The results indicated that coconut wood contains of wood extractives that soluble in hot water of 3.75 ~ 8.92%; alcohol benzene of1.88 ~ 8.78%; 1% NaOH of 18.76 ~ 33.61%; ash content of 0.75 ~ 4.08%; celluloses of 28.1 ~ 36.55%; holocelluloses of 69.51 ~ 80.07% and lignin of 26.58 ~ 36.35%. From base to top, wood extractives soluble in 1% NaOH increased but in other solutions did not have uniform distributions. Laterally, only holocelluloses and lignin did not have uniform distributions, whereas the others increased from dermal to core

STRUKTUR DAN DIMENSI SERAT PELEPAH KELAPA SAWIT Stucture and Dimensions Fiber of Oil Palm Frond Lusita Wardani; Faisal Mahdie; Yusuf Sudo Hadi
Jurnal Hutan Tropis Vol 2, No 1 (2014): Jurnal Hutan Tropis Volume 2 Nomer 1 Edisi Maret 2014
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v2i1.1615

Penelitian ini mengidentifikasi beberapa sifat anatomi pelepah sawit. Pelepah sawit dbedakan menjad 3 bagian (pangkal, tengah dan ujung, Hasil penelitian menunjukkan bahwa tebal serat, diameter serat pelepah sawit serta diameter metaxylem dan tebal dinding selnya masing-masing adalah 2328,3-2486,0 μm; 26,2-27.0 μm; 598,3-792,51μm, and 21,65-26,65 μm. Pelepah sawit mempunyai nilai rata-rata felting power 90,23, mulsthep ratio 31,73, flexibility ratio 0,81, runkel ratio 0,22 dan cooefficeint rigidity 0,08.Kata kunci: sifat anatomi , dimensi serat, pelepah sawit

Morphological, Chemical, and Thermal Characteristics of Nanofibrillated Cellulose Isolated Using Chemo-mechanical Methods Solikhin, Achmad; Hadi, Yusuf Sudo; Massijaya, Muh Yusram; Nikmatin, Siti
Makara Journal of Science Vol. 21, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

The objective of this research was to analyze the morphology, crystallinity, elemental components, and functional group changes, as well as thermal stability of nanofibrillated cellulose (NFC). Nanofibrillated cellulose has an irregular and aggregated shape with a diameter of about 100 nm. NFC self-aggregations were observed due to hydrogen bonding and Van-der Waals forces. The cellulose crystallinity index, atomic size, and polymorph of the NFC sample were found to be 63.57%, 2.2 nm, and cellulose I, respectively. The NFC sample was composed of various elemental components, such as C, O, N, Na, Al, Si, and K. IR analysis showed only small amounts of hemicellulose and lignin deposits, whereas cellulose functional groups appeared inseveral wavenumbers. Aromatic and oxygenated compounds, such as carboxylic acids, phenols, ketones, and aldehydes, were deposited as extractive on NFC; these compounds were associated with cellulose, hemicellulose, and lignin. The NFC thermal degradationprocess consisted of four steps: water evaporation (50-90 °C); hemicellulose degradation and glycosidic linkage cleavage (250-325 °C); amorphouscellulose and lignin degradation (325-429.29 ºC); and cellulose crystalline degradation (above 429.29 °C).

Effects of Different Extraction Solvents on the Extractive Removal and Properties of Oil Palm Empty-Fruit Bunch Cellulosic Nanofibers Solikhin, Achmad; Hadi, Yusuf Sudo; Massijaya, Muh Yusram; Nikmatin, Siti
Makara Journal of Science Vol. 25, No. 3
Publisher : UI Scholars Hub

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In this study, the effect of different extraction solvents on the isolation and properties of cellulosic nanofibers (CNFs) were investigated. The unextracted and different solvent-extracted CNFs formed horn-like features and irregularly aggregated nanofibers after oven drying. Scanning electron microscopy at 10000× magnification revealed the smooth external surfaces of all extracted CNFs; this finding is attributed to the limited deposition of amorphous lignocellulosic components on the fibers. All resultant CNF solutions revealed aggregation, with a particle size distribution and zeta average of 21.39–513.00 nm and 162.26–342.13 nm, respectively. Extraction with different solvents and chemical treatment yielded CNF solutions with good transparency. Increases in crystallinity indices were generated by extractive removal and enhanced the delignification and bleaching processes. The atomic crystal size of untreated and different solvent-treated CNFs varied with the type of native cellulose. A dramatic decrease in organic (i.e., C, N, and O) and inorganic (i.e., Na, K, and Si) elements was observed following extractive removal and cellulose purification

Co-Authors . Suhasman A.A. Ketut Agung Cahyawan W Abdillah, Imam Busyra Achmad Solikhin Adi Santoso ADI SANTOSO Adi Santoso Adi Santoso Adi Santoso Andi SRD Lestari Andi Sri Rahayu Diza Lestari Andri Tri Atmojo Apri H Iswanto Apri Heri Iswanto Ariana Ariana Arif NURYAWAN Arif Nuryawan Astari, Lilik Astuti Arif Barly Barly Barly Barly Darwaman, I Wayan Darwaman, I Wayan Dede Hermawan Deden Edi Rusfiandi Desyanti Desyanti Dian Setyaningsih Dina SETYAWATI Dwi J Priyono Elis Nina Herliyana Endang Sri Lestari Faisal Mahdie Fauzi Febrianto Gina Gina Bachtiar Gustan Pari I Wayan Darmawan I Wayan Darwaman I Wayan Darwaman I.G.K. Tapa Darma Indah Sulistyawati Indah Sulistyawati, Indah Isna Yuniar Wardhani Jajang Suryana Jamaludin MALIK Jamaludin MALIK Jasni Jasni Jasni Jasni Jhon Novarly Simanjuntak Kayano Purba Kunio Tsunoda Kurnia Wiji Prasetiyo Laila Fithri Maryam Laksono Trisnantoro Lusita Wardani Lusita WARDANI Lusita WARDANI Lusita Wardani Lusita Wardani M Rosid Mangurai, Silvia Uthari Nuzaverra Mayang Massijaya, Muh, Yusram Massijaya, Muhamad Yusram Massijaya, Muhamad Yusram Muh Yusram Massijaya Muh Yusram Massijaya, Muh Yusram Muh. Yusram Massijaya Muh. Yusram Massijaya Muhamad Yusram Massijaya Muhamad Yusram Massijaya Muhamad Yusram Massijaya Muhammad Adly Rahandi Lubis Muhammad Firdaus Muhammad Iqbal Adi Baskara Muhammad Iqbal Maulana Muhammad Y Massijaya Munadian, Munadian Naresworo Nugroho Nifa Hanifa Nurwati Hadjib Nurwati Hadjib Nurwati Hadjib Raudhah Juliati Raudhah Juliati, Raudhah Rita Kartika Sari Rohny Setiawan Maail Salim Hiziroglu Siti Aisyah Siti Nikmatin Solikhin, Achmad Subyakto Subyakto SUHASMAN . Suhasman Suhasman Sujanto) Sujanto) Sulaeman Yusuf Suminar S Achmadi Surdiding Ruhendi Surdiding RUHENDI Surjono Surjokusumo Surjono Suryokusumo Surjono Suryokusumo, Surjono Suwandi Kliwon Suwardi Sumadiwangsa Syamani, Firda Aulya Tengku Muhammad Renzy Hariz Wahyu Hidayat Wardani, Lusita Wardani, Lusita Y. Afidudin Y. Afidudin, Y.

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