Sandwich compression of wood: effect of superheated steam treatment on sandwich compression fixation and its mechanisms
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Sandwich compression of wood: effect of superheated steam treatment on sandwich compression fixation and its mechanisms Elin Xiang1 · Shanghuan Feng2 · Shumin Yang3 · Rongfeng Huang1 Received: 27 April 2020 / Accepted: 13 October 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract 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
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