Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Effect of Alkali-Washing at Different Concentration on the Chemical Compositions of the Steam Treated Bamboo Strands

  • MAULANA, Muhammad Iqbal (Department of Forest Products, Faculty of Forestry, IPB University (Bogor Agricultural University)) ;
  • MURDA, Rio Ardiansyah (Department of Forest Products, Faculty of Forestry, IPB University (Bogor Agricultural University)) ;
  • PURUSATAMA, Byantara Darsan (Department of Forest Biomaterials Engineering, College of Forest and Environmental Science, Kangwon National University) ;
  • SARI, Rita Kartika (Department of Forest Products, Faculty of Forestry, IPB University (Bogor Agricultural University)) ;
  • NAWAWI, Deded Sarip (Department of Forest Products, Faculty of Forestry, IPB University (Bogor Agricultural University)) ;
  • NIKMATIN, Siti (Department of Physics, Faculty of Mathematics and Natural Sciences, IPB University (Bogor Agricultural University)) ;
  • HIDAYAT, Wahyu (Department of Forestry, Faculty of Agriculture, Lampung University) ;
  • LEE, Seung Hwan (Department of Forest Biomaterials Engineering, College of Forest and Environmental Science, Kangwon National University) ;
  • FEBRIANTO, Fauzi (Department of Forest Products, Faculty of Forestry, IPB University (Bogor Agricultural University)) ;
  • KIM, Nam Hun (Department of Forest Biomaterials Engineering, College of Forest and Environmental Science, Kangwon National University)
  • Received : 2020.06.10
  • Accepted : 2020.12.08
  • Published : 2021.01.25
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Abstract

The objective of this study was to investigate the effect of alkali-washing with different sodium hydroxide concentrations on the chemical compositions of steam-treated Betung bamboo strand. Strands were subjected to steam treatment at 126 ℃ for 1 h under 0.14 MPa pressure and followed by washing with 1-5% sodium hydroxide solution for 30 sec. The alteration of structural and non-structural chemical components content of bamboo strands was evaluated. Steam and washing treatments with various concentrations of sodium hydroxide solution considerably reduced the extractive content of bamboo strands, and the cell wall chemical components of the strand in the small degree. FTIR analysis showed noticeable changes in peaks related to hemicellulose and lignin. The relative crystallinity increased significantly after steam and washing treatment with sodium hydroxide up to 3% concentration. SEM Images showed smooth and clean strands surface after washing with 3% sodium hydroxide.

Keywords

References

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