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Effect of Drying Methods on Longitudinal Liquid Permeability of Korean Pine  

Lee, Min-Gyoung (Department of Forest Products, College of Agriculture, Chungnam National University)
Lu, Jianxiong (Research Institute of Wood Industry, Chinese Academy of Forestry)
Jiang, Jiali (Research Institute of Wood Industry, Chinese Academy of Forestry)
Kang, Ho-Yang (Department of Forest Products, College of Agriculture, Chungnam National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.36, no.5, 2008 , pp. 49-55 More about this Journal
Abstract
This study was carried to investigate the effects of steaming and four different drying methods on the longitudinal liquid permeability of Korean pine (Pinus koraiensis Sieb.et Zucc.) board. Four drying methods were air drying, conventional kiln drying, microwave-vacuum drying and high temperature drying. Darcy equation was used for calculating the specific permeability of the small sapwood specimens taken from the treated boards while capillary rising method was used for the heartwood specimens. The sapwood specimens were extracted with water and benzene-alcohol solution to examine the mechanism of liquid flow in treated wood. No significant correlation was found between specific permeability and the number of resin canals of the sapwood specimens. Extraction decreased the differences of specific permeabilities of the sapwood specimens between the five treatment methods. The effects of extraction on the longitudinal permeability are different between five treatments. The fluid path in heartwood was observed by dynamic observation method.
Keywords
Korean pine; longitudinal liquid permeability; Darcy's law; steaming treatment; drying; liquid uptake; dynamic observation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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