Articles

THE QUALITY OF COMPOSITE BOARD MADE OF WASTE OIL PALM STEM (Elaeis guineensis Jacq) AND RECYCLE POLYETHYLENE (PE) Lubis, Maryam Jamilah; Risnasari, Iwan; Nuryawan, Arif; Febrianto, Fauzi
Jurnal Teknologi Dan Industri Pangan Vol 12, No 1 (2001): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6066/848

Abstract

The main objective of this research was to find out the substitution of solid wood and it may solve environmental problem. These researches concerned on using waste of oil palm stem particle form and recycle plastic polyetyhlene (PE) as raw materials for composite board. In this research, 5% Maleic Anhydride (MAH) was added to increase compatibility and 0.75% Dicumyl Peroxide (DCP) was added to initiate the reaction of maleolation. The methods of this research followed JIS A 5908 (2003) with ratio of plastic to particle were 50:50, 60:40 and 70:30, respectively, pressed at 30 kgf/cm2 in 165°C for 15 minutes. Evaluation on physical and mechanical properties based on JIS A 5908 (2003), and the result of physical properties as follow : 1) Density met the standard at 0.77 - 0.99 g/cm, 2) The value of moisture content were below on target and the standard because of the hidrofobicity of PE, the range were 0.79 - 3.06%, 3) Thickness swelling of the board for 24 hours fulfill the standard the value were 0.44 - 2.77%. Unfortunatelly the water absorption were 2.82 - 16.19%. Mechanical properties consist of modulus elasticity (MOE), modulus rupture (MOR) and screw holding strength didn’t meet the criteria of JIS A 5908 (2003), except MOR with plastic: particle 60:40 with particle made of inner stem. Keywords: Composite board, oil palm stem, polyethylene (PE)
Heat Value Analysis and Economic Feasibility of Wood Utilization as Coal Substitution in Cement Factory Cahyono, Tekat Dwi; Coto, Zahrial; Febrianto, Fauzi
Forum Pasca Sarjana Vol 31, No 2 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

Since the 1970s, energy has been a significant product of forest-related biomass.  The use of wood to provide industrial heat and electricity has become important to the economic viability of the forest product and other industry.  Growing normally at marginal soil of mining area, Leuchaena leucocephala, Samanea saman, Sesbandia grandiflora, Glirisidia maculate, Pterocarpus indica, Enterolobium cylocarpum, Hibiscus tiliaceus, and Gmelina arborea woods were analysed to investigate heat value and economic feasibility of their usage as coal substitution in cement production.  Examination on those woods species showed that mean of heat value in air dry condition was about 4.000 kcal/kg. As BC ratio is 2,07, then the mining plantation enterprise to provide fuel wood is feasible economically.   Key words: wood, heat value, feasibility
SIFAT FISIS DAN MEKANIS BATANG KELAPA SAWIT (Elaeis guineensis Jacq) ASAL KEBUN AEK PANCUR- SUMATERA UTARA ISWANTO, Apri Heri; SUCIPTO, Tito; AZHAR, Irawati; COTO, Zahrial; FEBRIANTO, Fauzi
Jurnal Ilmu dan Teknologi Hasil Hutan Vol 3, No 1 (2010): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The objective of this research was to analyze the physical and mechanical properties of palm oil trunk.  The result showed that in term of the vertical direction the lower part of stem had better physical (density, moisture content and shrinkage) and mechanical (modulus of elasticity, modulus of rupture, hardness, compressive and tensile strength parallel to grain) properties compared with medium and upper end part.  In the horizontal direction the edge part of trunk had better physical and mechanical properties than medium and center part.   Keywords :              horizontal direction, palm oil stem, physical pro-perties, mechanical properties, vertical direction
KEASAMAN DAN KAPASITAS PENYANGGA BEBERAPA JENIS KAYU TROPIS ISWANTO, Apri Heri; SUCIPTO, Tito; FEBRIANTO, Fauzi
Jurnal Ilmu dan Teknologi Hasil Hutan Vol 4, No 1 (2011): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The acidity of wood and panel product was important factor to impact on metal corrosion and give effect on adhesive curing time.  The objective of this research was  to explore of pH and buffering capacity from nine tropical woods.  Method to determination of pH and buffering capacity  reffers to Johns and Niazi (1980) experiment. The result of this research showed that nine tropical woods which observed had different acidity and buffering capacity. The range of wood acidity had pH 4-7.  The correlation value of pH and buffering capacity from this research about 4-5 for base and acid buffering.   Keywords:  acidity of wood, pH, buffering capacity.
ASPEK THERMOFISIS PEMANFAATAN KAYU SEBAGAI BAHAN BAKAR SUBSTITUSI DI PABRIK SEMEN CAHYONO, Tekat DWI; COTO, Zahrial; FEBRIANTO, Fauzi
Jurnal Ilmu dan Teknologi Hasil Hutan Vol 1, No 1 (2008): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Wood has specific base properties of thermal and combustion. Since being grew normally at marginal soil of mining area, sengon buto, waru and gmelina woods were objectified to investigate thermophisic aspect of their usage as substitution fuel in cement production. Examination based on species, ages and horizontal positions of those woods showed that mean of heating value in oven dry and air dry condition was 4.505 kkal/kg and 4.084 kkal/kg, respectively. Determination of wood substitution to ordinary fuel was acquired by accumulating heating value with prediction value of plantation biomass potency; and enquiry for 850 ha mining area resulted that waru wood will contribute about 5,14% to coal total requisite per year, gmelina and sengon buto will contribute about 5,03% and 4,49%, respectively.   Keywords:  Wood, heating value, substitution fuel
The Quality Of Composite Board Made Of Waste Oil Palm Stem (Elaeis Guineensis Jacq) And Recycle Polyethylene (Pe) Lubis, Maryam Jamilah; Risnasari, Iwan; Nuryawan, Arif; Febrianto, Fauzi
Jurnal Teknologi Industri Pertanian Vol 19, No 1 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Jurnal Teknologi Industri Pertanian

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Abstract

The main objective of this research was to find out the substitution of solid wood and it may solve environmental problem. These researches concerned on using waste of oil palm stem particle form and recycle plastic polyetyhlene (PE) as raw materials for composite board. In this research, 5% Maleic Anhydride (MAH) was added to increase compatibility and 0.75% Dicumyl Peroxide (DCP) was added to initiate the reaction of maleolation. The methods of this research followed JIS A 5908 (2003) with ratio of plastic to particle were 50:50, 60:40 and 70:30, respectively, pressed at 30 kgf/cm2 in 165°C for 15 minutes. Evaluation on physical and mechanical properties based on JIS A 5908 (2003), and the result of physical properties as follow : 1) Density met the standard at 0.77 - 0.99 g/cm, 2) The value of moisture content were below on target and the standard because of the hidrofobicity of PE, the range were 0.79 - 3.06%, 3) Thickness swelling of the board for 24 hours fulfill the standard the value were 0.44 - 2.77%. Unfortunatelly the water absorption were 2.82 - 16.19%. Mechanical properties consist of modulus elasticity (MOE), modulus rupture (MOR) and screw holding strength didn’t meet the criteria of JIS A 5908 (2003), except MOR with plastic: particle 60:40 with particle made of inner stem. Keywords: Composite board, oil palm stem, polyethylene (PE)
The Effect of Pressing Temperature and Time on the Quality of Particle Board Made from Jatropha Fruit Hulls Treated in Acidic Condition Iswanto, Apri; Febrianto, Fauzi; Hadi, Yusuf; Ruhendi, Surdiding; Hermawan, Dede
Makara Journal of Technology Vol 17, No 3 (2013)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (130.655 KB) | DOI: 10.7454/mjt.v17i3.278

Abstract

The high of pH of jatropha fruit hulls causes the negative properties of particleboard made from this material. Adjusting the  particle  acidity  and  pressing  conditions  (temperature  and  time)  is  among  the  technical  modifications  available  to improve this particleboard’s properties.  Particle acidity has been adjusted in a previous research project, and immersing the  particles  in  acetic  acid  was  found  to  be  the  best  treatment  in  this  preliminary  research.  In  order  to  improve  the particleboard’s  properties,  an  experiment  was  conducted  to  determine  the  best  pressing  temperature  and  time.  The objective of the research was to evaluate the influence of pressing temperature and time on the physical and mechanical properties of the board. Jatropha fruit hulls were immersed in 1% acetic acid solution for 24 hours. UF resin was used as the adhesive in the amount of 10%. The pressing temperatures and times used in this research were 110 °C, 120 °C, and 130 °C for 8 and 10  minutes, respectively. The particleboards  were tested to determine their physical and  mechanical properties according to JIS A 5908-2003. The result showed that pressing at 130 °C for 10 minutes resulted in the best physical  and mechanical  properties.  Increasing  the  pressing temperature  at  a  constant  time  or  increasing  the  pressing time  at  a  constant  temperature  caused  the  particleboard  to  exhibit decreased  water  absorption.  The  thickness  swelling and modulus of elasticity (MOE) of the particleboard did not fulfil JIS A 5908-2003.
Analisis Modulus Geser dan Pengaruhnya terhadap Kekakuan Panel Laminasi Kayu Samama (Antocephallus Macrophyllus) Cahyono, Tekat Dwi; Wahyudi, Imam; Priadi, Trisna; Febrianto, Fauzi; Ohorella, Syarif
Jurnal Teknik Sipil Vol 21, No 2 (2014)
Publisher : Institut Teknologi Bandung

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Abstract

Abstrak. Modulus geser perlu dijadikan pertimbangan pada produkkayu, khususnya untuk desain yang memiliki rasio tinggi/panjang bentangnya besar.Penelitian ini mendesain 6 tipe panel laminasi kayu Samama (Antocephallus macrophyllus), menganalisis modulus geser dan pengaruhnya terhadap nilai kekakuan (MOEstatis) masing-masing panel laminasi. Hasilnya kemudian dibandingan dengan kekakuan hasil pengujian non destruktif (MOEd). Hasil penelitian menunjukkan bahwa modulus geser panel laminasi kayu Samama memberikan pengaruh sebesar 2 - 8% terhadap kekakuan kayu Samama, tergantung pada tipe laminasi dan panjang bentangnya. Sementara itu nilai pengujian non-destruktif memiliki nilai yang lebih besar 11 - 20% dibandingan dengan kekakuan panel laminasi kayu Samamayang telah terkoreksi oleh modulus geser. Abstract. Shear modulus need to be considered in designing wood product that has high ratio of height/length. This study designed 6 types of panel lamina made of Samama wood (Antocephallus macrophyllus). The shear modulus was measured and its effect on the stiffness (MOE static) was analyzed in comparison to those of non-destructive test (MOEd). The results showed that shear modulus affected the stiffness of the laminas by 2-8%;the value was determined by the type of lamination and the length of span. Meanwhile, non-destructive test showedthat the laminas had 11-20% of higher stiffness than those of laminas with shear modulus corrected-stiffness.
THE QUALITY OF COMPOSITE BOARD MADE OF WASTE OIL PALM STEM (Elaeis guineensis Jacq) AND RECYCLE POLYETHYLENE (PE) Lubis, Maryam Jamilah; Risnasari, Iwan; Nuryawan, Arif; Febrianto, Fauzi
Jurnal Teknologi dan Industri Pangan Vol 12, No 1 (2001): Jurnal Teknologi dan Industri Pangan
Publisher : Departemen Ilmu dan Teknologi Pangan, IPB Indonesia bekerjasama dengan PATPI

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

Abstract

The main objective of this research was to find out the substitution of solid wood and it may solve environmental problem. These researches concerned on using waste of oil palm stem particle form and recycle plastic polyetyhlene (PE) as raw materials for composite board. In this research, 5% Maleic Anhydride (MAH) was added to increase compatibility and 0.75% Dicumyl Peroxide (DCP) was added to initiate the reaction of maleolation. The methods of this research followed JIS A 5908 (2003) with ratio of plastic to particle were 50:50, 60:40 and 70:30, respectively, pressed at 30 kgf/cm2 in 165°C for 15 minutes. Evaluation on physical and mechanical properties based on JIS A 5908 (2003), and the result of physical properties as follow : 1) Density met the standard at 0.77 - 0.99 g/cm, 2) The value of moisture content were below on target and the standard because of the hidrofobicity of PE, the range were 0.79 - 3.06%, 3) Thickness swelling of the board for 24 hours fulfill the standard the value were 0.44 - 2.77%. Unfortunatelly the water absorption were 2.82 - 16.19%. Mechanical properties consist of modulus elasticity (MOE), modulus rupture (MOR) and screw holding strength didn?t meet the criteria of JIS A 5908 (2003), except MOR with plastic: particle 60:40 with particle made of inner stem. Keywords: Composite board, oil palm stem, polyethylene (PE)
Binderless MDF from Hydroxymethylated Kenaf Pulp Wistara, Nyoman J; Starini, Wulan; Febrianto, Fauzi; Pari, Gustan
Jurnal Ilmu Kehutanan Vol 12, No 1 (2018)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (716.751 KB) | DOI: 10.22146/jik.34031

Abstract

Modified lignin with improved reactivity can be a potential alternative for synthetic phenol formaldehyde resin for the adhesive of wood composite. Direct hydroxymethylation of kenaf in the present experiments was intended to increase lignin reactivity, and therefore was expected to result in satisfying properties of binderless MDF. The stem of kenaf was refined in a disk refiner and the refined fibers were hydroxymethylated in various levels of alkalinity. The concentration of NaOH during hydroxymethylation was of 3%, 6% and 12%. Wet process was applied to produce MDF (30 cm x 30 cm x 1 cm) with target density of 0.65 g/cm³. Physical and mechanical properties of MDF were measured in accordance with the standard procedure of JIS A 5905: 2003. Chemical changes in the surface of pulp and the change of board crystallinity were evaluated by FTIR-KBr method and X-Ray Diffractometry (XRD), respectively. Density, moisture content, and screw withdrawal of the board increased with increasing of NaOH concentration. Thickness swelling, water absorption, MOE and MOR increased up to 3% concentration of NaOH. The IB and heat conductivity of MDF were not influenced by NaOH concentration. Increasing OH groups due to hydroxymethylation was thought to be the origin of high water absorption and thickness swelling of the resulting boards. Higher alkalinity during hydroxymethylation stage was likely increasing cellulose crystallinity that brought about increasing board density. However, chemical modification of the fiber was thought to be more influential to the bending strength and stiffness of the resulting fiberboard. Hydroxymethylation of kenaf pulp was successfully improved board properties. Except for the moisture content, thickness swelling and internal bonding (at 0% and 3% NaOH concentration), all properties of the MDF satisfied the requirement of JIS A 5905: 2003 (type 5) standard. MDF Tanpa Perekat dari Pulp Kenaf TerhidroksimetilasiIntisariLignin yang telah ditingkatkan reaktifitasnya dapat menjadi bahan alternatif perekat resin sintetis fenol formaldehida. Reaktivitas lignin dapat diperbaiki melalui hidroksimetilasi. Dalam penelitian ini, batang kenaf digiling menggunakan disk refiner, dan selanjutnya dilakukan hidroksimetilasi pada beragam alkalinitas. Konsentrasi NaOH yang digunakan dalam hidroksimetilasi bervariasi dari 3%, 6% dan 12%. Proses basah diterapkan untuk membuat MDF (30 cm x 30 cm x 1 cm) dengan target kerapatan 0,65 g/cm3. Sifat fisis dan mekanis MDF diukur mengikuti  prosedur standar JIS A 5905: 2003. Perubahan gugus fungsi permukaan pulp dan tingkat kristalinitas papan masing-masing dievaluasi menggunakan FTIR-metode KBr dan difraksi sinar X (XRD). Hasil penelitian menunjukkan bahwa konsentrasi NaOH tidak mempengaruhi IB dan konduktivitas panas MDF. Kerapatan, kadar air, dan kuat pegang sekrup cenderung meningkat dengan meningkatnya konsentrasi NaOH. Pengembangan tebal, daya serap air, MOE, dan MOR meningkat sampai dengan hidroksimetilasi dalam NaOH konsentrasi 3%. Peningkatan gugus OH serat akibat hidrosimetilasi diduga meningkatkan penyerapan air dan pengembangan tebal papan yang dihasilkan. Alkalinitas hidroksimetilasi yang lebih tinggi meningkatkan gugus cincin aromatik yang menunjukkan bahwa reaksi formaldehida berlangsung dengan lebih baik. Peningkatan alkalinitas dalam hidroksimetilasi meningkatkan kristalinitas selulosa. Peningkatan kristalinitas selulosa diduga berkontribusi dalam meningkatkan kerapatan, namun perubahan gugus kimia serat diduga lebih berpengaruh terhadap MOR dan MOE dari papan serat yang dihasilkan. Hidroksimetilasi pulp kenaf berhasil meningkatkan sifat papan. Kecuali untuk kadar air, pengembangan tebal dan IB (pada hidroksimetilasi dalam 0% dan 3% NaOH), semua sifat-sifat dari MDF yang dihasilkan memenuhi persyaratan standar JIS A 5905: 2003 (tipe 5).