Wood Science and Technology

, Volume 41, Issue 4, pp 351–360 | Cite as

Effects of previous solvent exchange on acetylation of wood

  • Eiichi ObatayaEmail author
  • Kazuya Minato


Wood specimens were prepared in a swollen state using solvent exchange (PS) treatment. The swollen wood specimens were acetylated using acetic anhydride by heating at 80–120°C. At the beginning of heating, the weight percent gain (WPG) of PS-treated wood was greater than that of conventionally acetylated wood. This acceleration effect of the PS treatment was explained by the introduction of treating reagent into the wood polymers where the intermolecular hydrogen bonds were previously broken. On the other hand, the PS treatment had no influence on the final WPG and moisture sorption characteristics of acetylated wood. This indicated that the intrinsic reactivity of wood constituents was unaffected by the PS treatment. The acetylation of PS-treated wood produced greater bulking and slightly higher dimensional stability than that in the case of conventional acetylation at the same WPG. It was speculated that the expansion of cell lumina due to the PS treatment resulted in greater bulking on acetylation and lesser swelling of acetylated wood with moisture sorption.


Acetic Anhydride Equilibrium Moisture Content Cell Lumina Wood Specimen Moisture Sorption 
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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Graduate School of Life and Environmental SciencesUniversity of TsukubaIbarakiJapan
  2. 2.Graduate School of AgricultureKyoto Prefectural UniversityKyotoJapan

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