Abstract
It has been known that acetylation improves the dimensional stability of wood. Liquid phase acetylation is more popular than gas-phase acetylation for the effectiveness of weight gain of wood. In this study domestic red and Korean pine specimens were liquid phase acetylated and their physical properties, such as density, bending strength, dimensional stability etc., were investigated. Acetylation increased the average weights of red and Korean pine specimens by 10.4% and 9.2%, respectively, and their average oven-dry densities were increased by 6.9% and 4.6%, respectively. Acetylation did not influence on modulus of rupture (MOR), modulus of elasticity (MOE) and dynamic MOE (DMOE). The average percentage reduction in hygroscopicity (PRH) of red and Korean pine specimens were respectively 20.6% and 13.8%, while the average percentage reduction in water soaking (PRW) were respectively 20.0% and 8.5%. Thus it can be concluded that the liquid acetylation improved the dimensional stability of red pine specimens more than that of Korean pine specimens.
Original language | English |
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Pages (from-to) | 429-437 |
Number of pages | 9 |
Journal | Journal of the Korean Wood Science and Technology |
Volume | 43 |
Issue number | 4 |
DOIs | |
State | Published - Jul 2015 |
Keywords
- Acetylation
- Dimensional stability
- Hygroscopicity
- Pinus densiflora
- Pinus koraiensis
- Weight percentage gain