Journal of the Korean Wood Science and Technology

  • 제51권2호
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  • Pages.133-144
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  • 2023
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  • 1017-0715(pISSN)
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  • 2233-7180(eISSN)
한국목재공학회 (The Korean Society of Wood Science & Technology)
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Improvement of Dimensional Stability of Tropical Light-Wood Ceiba pentandra (L) by Combined Alkali Treatment and Densification

  • Deded Sarip NAWAWI (Department of Forest Products, Faculty of Forestry and Environment, IPB University) ;
  • Andita MARIA (Department of Forest Products, Faculty of Forestry and Environment, IPB University) ;
  • Rizal Danang FIRDAUS (Department of Forest Products, Faculty of Forestry and Environment, IPB University) ;
  • Istie Sekartining RAHAYU (Department of Forest Products, Faculty of Forestry and Environment, IPB University) ;
  • Adesna FATRAWANA (Department of Forestry, Faculty of Agriculture, Khairun University) ;
  • Fadlan PRAMATANA (Department of Forestry, Faculty of Agriculture, Nusa Cendana University) ;
  • Pamona Silvia SINAGA (Department of Forestry, Faculty of Agriculture, Nusa Cendana University) ;
  • Widya FATRIASARI (Department of Forest Products, Faculty of Forestry and Environment, IPB University)
  • 투고 : 2022.10.16
  • 심사 : 2023.01.26
  • 발행 : 2023.03.25
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초록

Densification is an effective method for improving the physical and mechanical properties of low-density wood. However, the set-recovery of dimensions was found to be the problem of densified wood due to low fixation during the densification process. Alkali pretreatment before densification is thought to be a modification process to improve the dimensional stability of densified wood. In this research, the wood samples used were boiled in a 1.25 N sodium hydroxide (NaOH) solution at different times, followed by densification for 5 h at 100℃. The alkali pretreatment for 1, 3, and 5 h of boiling increased the dimensional stability of densified woods and anti-swelling efficiency values were 8.52%, 63.24%, and 48.94%, respectively. The boiling of wood in NaOH solution decreased the holocellulose content, as well as lignin to a lesser degree, and a lower crystallinity index was observed. The lower hydroxyl groups and a higher proportion of lignin in treated samples seem to have contributed to the high dimensional stability detected.

키워드

과제정보

The authors are grateful for the facilities, as well as scientific and technical support provided by the Integrated Laboratory of Bioproducts (iLab) Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN) through E-Layanan Sains Badan Riset dan Inovasi Nasional.

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