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Andi D Yunianti
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Agriculture, Biological Sciences & Forestry

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Wood Quality of Clones Teak with Different Planting Distance Andi D Yunianti; Imam Wahyudi; Iskandar Z Siregar; Gustan Pari
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 1 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.562 KB) | DOI: 10.51850/jitkt.v9i1.150

Abstract

Many researchs have been done focusing on the wood quality of teak (Tectona grandis L.f.) especially at the various age level and different locations. This research analyzed different planting distance : (3 x 3) m2 and (2 x 6) m2 from 2 clones; Cepu and Madiun cloned. Oven-dried density, fiber dimension, microfibril angle and modulus of elasticity were determined to asses the wood quality. The results showed that the wood quality of teak from spacing (3 x 3) m2 were better than (2 x 6) m2, although diameter and growth rate were higher in spacing (2 x 6) m2. However, there were not diffrences of wood quality for both clones.Key words : Cepu clone, Madiun clone, planting distance, Tectona grandis, wood quality.
Physical and Mechanical Properties of Oriented Strand Board Prepared from Acetylated Wood Strands Apri H Iswanto; Widya Fatriasari; Andi D Yunianti; Ahmad Zailani; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.237 KB) | DOI: 10.51850/jitkt.v11i2.97

Abstract

The objectives of this research were to evaluate of the physical and mechanical properties of oriented strand board (OSB) prepared from acetylated wood strands. Strands derived from Acacia mangium wood were immersed in acetic anhydride for 24 h. After that, strands were dried at 60 C to reach moisture content (MC) of 5%. The slenderness and aspect ratios of strands were 100.72±39.42 and 3.05 ± 0.44. Boards size and target density were set at (25x25x0.5) cm3 and 0.7 g cm-3. The strand compositions for face, core, and back layers were 25, 50, and 25%, respectively. Phenol formaldehyde (PF) resin with amount of 8% was used to bind the strands. The results showed that weight percent gain (WPG) of acetylated strands was 4%. Acetylated strands resulted in improvement of dimensional stabilization (water absorption (WA) and thickness swelling (TS) parameters) with anti-shrink efficiency (ASE) value of 19.65%. On the other hand, the modulus of elasticity (MOE), modulus of rupture (MOR) and internal bond (IB) were found to decrease with acetylation treatment. All the physical and mechanical properties of OSB evaluated except IB parameter fulfilled the requirements of JIS A 5908-2003 standard.Key words: acetylated, anti-shrink efficiency, dimensional stability, oriented strand board
Co-Authors Ahmad Zailani Apri H Iswanto Fauzi Febrianto Gustan Pari Imam Wahyudi Indrawan, Imam Wahyudi Iskandar Z Siregar Widya FATRIASARI