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All Journal Jurnal Ilmu dan Teknologi Kayu Tropis ULIN: Jurnal Hutan Tropis
Adrin Adrin
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Agriculture, Biological Sciences & Forestry Environmental Science

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Properties of Oriented Strand Board Prepared from Steam Treated Bamboo Strands under Various Adhesive Combinations Adrin Adrin; Fauzi Febrianto; Sucahyo Sadiyo
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 (578.957 KB) | DOI: 10.51850/jitkt.v11i2.89

Abstract

The objectives of this research were to analyze the physical and mechanical properties of Oriented Strand Board (OSB) prepared from steam treated betung bamboo (Dendrocalamus asper) strands under various adhesive combinations. The strands were steamed at 126 °C for 1 h with the pressure of 1.4 kg cm-2 prior to be blended with adhesive. Three-layered OSBs with the core layer orientation perpendicular to the face layers were prepared by bonding using 5% methylene diphenyl diisocyanate (ISO), 7% phenol formaldehyde (PF), combination of ISO:PF:ISO and PF:ISO:PF adhesives. Paraffin in amount of 1% was added as an additive. The strand ratio for face, core, and back layers was 1:1:1, respectively.The results indicated that the physical properties i.e., water absorption and thickness swelling, and mechanical properties i.e., modulus of rupture and modulus of elasticity both parallel and perpendicular to the grain direction and internal bond of OSB bonded ISO and combination of ISO:PF:ISO adhesives were much better than that of bonded with combination PF:ISO:PF and PF adhesives. Almost all parameters of OSB tested in this experiment were higher than the minimum criteria requirement of CSA 0437.0 (Grade 0-2) standard, except the value of MOE perpendicular to the grain direction of OSB bonded with PF adhesive.Key words: betung bamboo, isocyanate, oriented strand board, phenol formaldehyde, steam
Model Pendugaan Volume Tegakan Jati (Tectona grandis Linn.F) di Hutan Produksi Wemata Unit Pelaksana Teknis Daerah Kesatuan Pengelolaan Hutan Wilayah Kabupaten Belu Aah Ahmad Almulqu; Meilyn Renny Pathibang; Clara Maria Ximenes; Flora Evalina Kleruk; Yudisthira A.N.Rua Ora; Adrin Adrin; Fransiskus X Dako; Ni Kade Ayu D Aryani; Dina Tiara Kusumawardhani; Rinaldo Davinsy
ULIN: Jurnal Hutan Tropis Vol 7, No 1 (2023)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v7i1.10391

Abstract

Pendugaan model tegakan jati (Tectona grandis Linn.f) di kawasan hutan produksi Wemata dilakukan pada 150 pohon contoh, dimana sebanyak 90 pohon menjadi pohon model dan 60 pohon dijadikan dasar untuk memvalidasi model yang telah disusun. Tujuan penelitian ini adalah untuk menentukan potensi tegakan jati (Tectona grandis Linn.f) berdasarkan model terbaik yang terpilih. Hasil penelitian menunjukkan bahwa potensi tegakan jati seluas 154, 741 ha sebanyak 26.259,4 m3 – 27.420,1 m3. Penentuan model terbaik berdasarkan nilai koefisien determinasi (R²), bias (SEE), dan validasi model berdasarkan nilai rata-rata deviasi (SR), deviasi aggregate (SA), root mean square of deviation (RMSE) dan bias (e). model yang terbaik berdasarkan kriteria-kriteria tersebut adalah V = -0.17 + 0.865 D2T (R² = 98.1 %), SEE = 0.095, SR = 0.436%, SA = 0.18%, RMSE = 0.78 dan e = 0.33. dengan potensi tegakan jati (Tectona grandis Linn.f), sebesar 36.001,017m3- 37.741,329 m3
Co-Authors Almulqu, Aah Ahmad Clara Maria Ximenes Dina Tiara Kusumawardhani Fauzi Febrianto Flora Evalina Kleruk Fransiskus X Dako Meilyn Renny Pathibang Ni Kade Ayu D Aryani Rinaldo Davinsy Sucahyo Sadiyo Yudisthira A.N.Rua Ora