Journal of the Korean Wood Science and Technology

  • 제35권2호
  • /
  • Pages.51-60
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  • 2007
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  • 1017-0715(pISSN)
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  • 2233-7180(eISSN)
한국목재공학회 (The Korean Society of Wood Science & Technology)
권호 표지

Utilization of Pyrolysis Oil from Pine Wood as Thermosetting Wood Adhesive Resins

  • Kim, Jae-Woo (Agricultural Science and Technology Institute, Kyungpook National University) ;
  • Myers, Deland J. (Department of Food Science, Iowa State University) ;
  • Brown, Robert C. (Department of Chemical Engineering, Iowa State University) ;
  • Kuo, Monlin (Department of Natural Resources and Environment Management, Iowa State University)
  • 투고 : 2006.06.05
  • 심사 : 2006.07.31
  • 발행 : 2007.03.25
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초록

In this study, the possibility of using pyrolysis oil as wood adhesives was explored. Especially, adhesives were formulated by reacting pyrolysis oil and formaldehyde and also partially replacing phenol with pyrolysis oil in phenol-formaldehyde (PF) adhesive and soy hydrolizate/PF adhesive formulation. The pine wood was fast pyrolyized and the oils were obtained from a series of condensers in the pyrolysis system. The oils from each condenser were first reacted with formaldehyde to explore potential use of the oil itself as adhesive. The lap-shear bond strength test results indicated that the oil itself could be polymerized and form bonds between wood adherends. The oils from each condenser were then mixed together and used as partial replacement of phenol (25, 33, and 50% by weight) in phenol-formaldehyde adhesive. The bond strength of the oil containing PF adhesives was decreased as percent phenol replacement level increased. However, no significant difference was found between 25 and 33% of phenol replacement level. The oil-contained PF resins at 25, 33, and 50% phenol replacement level with different NaOH/Phenol (Pyrolysis oil) molar ratio were further formulated with soy hydrolizate to make soy hydrolizate/pyrolysis oil-phenol formaldehyde adhesive at 6:4 weight (wt) ratio and used for fiberboard manufacturing. Surface internal bond strength (IB) of the boards bonded with 33% replacement at 0.3 NaOH/Phenol (Pyrolysis oil) molar ratio performed better than other replacement levels and molar ratios. Thickness swelling after 24 hr cold water soaking and after 2 hr in boiling water was increased as % replacement of pyrolysis oil increased.

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참고문헌

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