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All Journal Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Penelitian Hasil Hutan

Firda A Syamani

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Author-ID : 3653738

Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Materials Science & Nanotechnology

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Sifat Fisis Mekanis Papan Partikel dari Serat Sisal atau Serat Abaka setelah Perlakuan Uap Physical and Mechanical Properties of Particleboard Made from Steamed Treated Sisal or Abaca Fibers Firda A Syamani; Kurnia W Prasetyo; Ismail Budiman; Subyakto Subyakto; Bambang Subiyanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 2 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Composites made from natural fibers have several weakness, particularly on thickness swelling, due to fiber dimensional changes during swelling of fiber cell wall or changing of lumen dimension by moisture uptaken. Steam treatment on fiber had been expected could reduced fiber water absorbancy by plasticized matrix of fiber cell walls. Fiber of Sisal and Abaca was chopped into 0.5 ~ 2.0 cm of length. Steam treament was conducted in autoclave for 30 minutes on 1.15 atm of pressure and 121ºC of temperature. Chopped fiber was dried in 60ºC oven to obtain 4% of moisture content. Dried fiber was mixed with 10% urea formaldehyde (UF) resin or 8% and 10% melamine urea formaldehyde (MF) resin (based on weight of fiber oven-dried). Glued fiber was formed into 25cm x 25cm x 0.8cm mat, then hot pressed at 20 kgf/cm2 pressure for 10 minutes. Target density was 0.7 g/cm3. Composites conditioning was conducted at room temperature for moisture equilibrium to the enviroment. Physical dan mechanical characteristics testing was carried out based on JIS A 5908 for particle board. Steam treatment could improved physical and mechanical properties of particleboard made from sisal fiber using 8% MF.

Characteristics of Soda Pulp from Distilled Vetiver Root Firda A Syamani; Subyakto Subyakto; Sukardi Sukardi; Ani Suryani
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Cellulose was commonly extracted from wood and other lignocellulosic materials such as leaf, straw, bast, or grass. There is no report found on extraction of cellulose from root plant yet. Industrially, the root of vetiver is distilled to obtain its essential oil. In this study, the distilled vetiver root was soda pulped and the resulted pulp was characterized by the use of X-ray diffraction and FT-IR spectroscopic methods. Response surface methodology with central composite design was used to investigate the influence of delignification on the chemical properties of pulp. Soda pulping was carried out at 160 – 180 oC for 1 – 3 hrs with 20 – 40% of alkali charge. Severe process conditions were required to achieve a significant degree of delignification. Pulping at 180 oC for 3 hours with alkali charge of 40% decreased the lignin content of pulp from 39.53% to 4.47%.Keywords: FT-IR analysis, soda pulping, vetiver root, X-ray diffraction

Karakteristik Film Komposit PVA-Pulp Putih Akasia Terfibrilasi (Characteristics of the Composite Film of PVA-Fibrillated Acacia Bleached Pulp) Firda A Syamani; Wida B Kusumaningrum
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 1 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

In the present experiments, the fibrillated bleached pulp of acacia (Acacia mangium) was used as reinforcing filler in the poly vinyl alcohol (PVA) matrix resin. Fibrillation processes of the pulp involved the use of disc refiner, ultraturrax (UT) and ultrasonicator (US). The composite film of PVA and 1% fibrillated pulp was prepared through film casting method. The morphology of fibrillated pulp was observed under SEM and the tensile properties (i.e. tensile strength, elongation at break and Young’s modulus) of the composites were determined by the use of universal testing machine (UTM). It was found that 30 cycles disc refining of the pulp proceeded with 10 min US treatment resulted in a fiber diameter of approximately 8.35 μm. PVA and fibrillated bleached pulp composites was transparent with thickness and density of 0.07-0.19 and 1.1-1.3 g cm-3, respectively. The Young’s modulus of the composites with 30 cycles disk refining of the pulp was much higher (122.7 Nm m-2) compared to that of pure PVA film (66.4 Nm m-2). The tensile strength of PVA and fibrillated bleached pulp composites and pure PVA was unchanged. Key words: Acacia mangium, film casting, mechanical fibrillation, mechanical properties, morphology

KARAKTERISTIK PAPAN PARTIKEL CAMPURAN LIMBAH KAYU SENGON DAN BAGAS SORGUM MENGGUNAKAN PEREKAT ASAM SITRAT Jajang Sutiawan; Suci Mardhatillah; Dede Hermawan; Firda A Syamani; Subyakto; Sukma S Kusumah
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.2020.38.3.139-150

Waste of sengon wood could be used as an alternative material in the manufacture of particleboards. However,particleboards made from sengon has seome inferior physical and mechanical properties, which did not meet the Japanesestandard (JIS A 5908: 2003). The aim of this research is to improve the physical and mechanical properties ofsengon particleboard using sorghum bagasse in various raw material composition using citric acid adhesives. Citric acidwas used as a binding agent with 20% adhesive content based on the weight of the air-dried particle. Compositionof fiber mixtures between sengon and bagasse sorghum were set in 100:0, 75:25, 50:50, and 25:75 wt.%. Thetargetted density of particleboard was set at 0.80 g/cm3. The hot-pressing conditions of particleboard manufacturingwere 200°C for 10 min. The physical and mechanical properties of the particleboards were evaluated according toJIS A 5908: 2003 standard. The results showed that the density, moisture content, thickness swelling, modulus ofelasticity, modulus of rupture and internal bond met the requirements of the JIS A 5908-2003 standard. Thus, theadditional of bagasse sorghum becomes an alternative way to enhance the physical and mechanical properties of sengonparticleboard. The addition 75% bagasse sorghum had better moisture content, water absorption, thickness swelling,modulus of elasticity, and modulus of rupture of particleboard.

Co-Authors Ani Suryani Bambang Subiyanto Dede Hermawan Ismail Budiman Jajang Sutiawan Kurnia W Prasetyo Subyakto SUBYAKTO SUBYAKTO Suci Mardhatillah Sukardi Sukardi Sukma S Kusumah Wida B Kusumaningrum

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