Sandwich compression of wood: effect of superheated steam treatment on sandwich compression fixation and its mechanisms

The permanent fixation is essential for the full industrialization of sandwich-compressed wood. In this study, sandwich-compressed wood was modified with superheated steam for compression fixation. Effects of superheated steam pressure on set-recovery were investigated. Changes in microstructure, ch...

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Bibliographic Details
Published in:Wood science and technology 2020-11, Vol.54 (6), p.1529-1549
Main Authors: Xiang, Elin, Feng, Shanghuan, Yang, Shumin, Huang, Rongfeng
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Cell walls
Cellulose
Ceramics
Composites
Compression
Cracks
Crystal structure
Crystallinity
Fixation
Foundries
Glass
Hemicellulose
Life Sciences
Lignin
Machines
Manufacturing
Microcracks
Natural Materials
Original
Pressure
Pressure effects
Processes
Recovery
Shrinkage
Statistical analysis
Steam
Steam pressure
Submerging
Wood Science & Technology
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Summary:The permanent fixation is essential for the full industrialization of sandwich-compressed wood. In this study, sandwich-compressed wood was modified with superheated steam for compression fixation. Effects of superheated steam pressure on set-recovery were investigated. Changes in microstructure, chemical structure and cellulose crystalline structure of the compressed wood were analyzed, to clarify the reason and mechanism for sandwich compression fixation under superheated steam treatment. It was found that set-recovery of central-compressed wood was higher than that of surface-compressed wood. Effects of superheated steam treatment on set-recovery were statistically significant ( P  
ISSN:0043-7719
1432-5225
DOI:10.1007/s00226-020-01237-7