Sena Maulana, Wahyu Hidayat, Ihak Sumardi, Nyoman J. Wistara, Muhammad I. Maulana, Jong Ho Kim, Seung Hwan Lee, Nam Hun Kim, Fauzi Febrianto
Physical and mechanical properties were evaluated for bamboo-oriented strand boards (BOSB) prepared with combinations of two contrasting bamboo species and bonded with phenol formaldehyde resin under various compression ratios. The strands from the culms of Gigantochloa pseudoarundinacea and Dendrocalamus asper bamboo were steam-treated at a temperature of 126 °C and a pressure of 0.14 MPa for 1 h and then washed with a 1% NaOH solution. Three-layer dual-species bamboo-oriented strand boards with a shelling ratio of 25 to 50 to 25 (face to core to back) were manufactured with different compression ratios using an 8% phenol formaldehyde adhesive and 1% paraffin. The slenderness ratio and aspect ratio were evaluated by measuring 100 random strands to determine uniformity. The solidity profiles of the dual-species bamboo-oriented strand boards (thickness direction) were relatively uniform. The modulus of rupture, modulus of elasticity, and internal bond values of the dual-species bamboo-oriented strand boards increased as the compression ratio increased, but the water absorption and thickness swelling decreased. The dual-species bamboo-oriented strand boards prepared with compression ratios of 1.44 to 1.25 and 1.54 to 1.33 met all the requirements of CSA standard 0437 (2011). The optimum compression ratio for the preparation of dual-species bamboo-oriented strand boards was 1.44 to 1.25. © 2021, BioResources. All rights reserved.
Forestry Engineering Program Study, Institut Teknologi Sumatera (ITERA), Lampung Selatan, 35551, Indonesia; Department of Forestry, Faculty of Agriculture, University of Lampung, Jalan Sumantri Brojonegoro 1, Bandar Lampung, 35145, Indonesia; School of Life Sciences and Technology, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia; Department of Forest Products, Faculty of Forestry and Environment, IPB University (Bogor Agricultural University), IPB Dramaga Campus, Bogor, 16680, Indonesia; Department of Forest Biomaterials Engineering, College of Forest and Environmental Science, Kangwon National University, Chuncheon, 24341, South Korea; Research and Innovation Center for Advanced Materials, Institut Teknologi Sumatera (ITERA), Lampung Selatan, 35551, Indonesia
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