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Color Control and Durability Improvement of Yellow Poplar (Liriodendron tulipifera) by Heat Treatments  

Yoon, Kyung-Jin (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Eom, Chang-Deuk (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Park, Jun-Ho (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Kim, Ho-Yong (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Choi, In-Gyu (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Lee, Jun-Jae (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Yeo, Hwanmyeong (Dept. Forest Sciences, Research Institute for Agriculture and Life Sciences, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.37, no.6, 2009 , pp. 487-496 More about this Journal
Abstract
The sapwood of yellow poplar is very bright while its heartwood is usually greenish which changes to dark brown with weathering. This difference in color value between sapwood and heartwood causes difficulty in using yellow poplar as higher value added materials such as interior finish and furniture part. In this study, hot-water treatment, vacuum-heat treatment and oven-heat treatment were carried out to reduce the difference in color value between heartwood and bright sap wood and to increase durability. FT-IR analysis, contact angle measurement and decay test were carried out to find out the mechanism of functional group change and the increment of durability by heat treatment. The result of decrement ratio of color difference were 45.7% by hot-water treatment, 26.8% by vacuum-heat treatment, and 60.2%, 87.8%, and 88.8% by $180^{\circ}C$, $200^{\circ}C$ and $220^{\circ}C$ oven-heat treatments respectively. Furthermore, it has been found that oven-heat treatment causes decrement of mass loss by decay in this study. It is suggested that oven-heat treatment could be environmentally friendly preservative treatment without chemicals.
Keywords
yellow poplar; heat treatment; discoloration; durability;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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