文献类型：期刊文献

英文题名：Changes in the wood-water interactions of mahogany wood due to heat treatment

作者：Zhou, Fan[1] Fu, Zongying[1] Gao, Xin[1] Zhou, Yongdong[1]

第一作者：周凡

通信作者：Zhou, YD[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2020

卷号：74

期号：9

起止页码：853-863

外文期刊名：HOLZFORSCHUNG

收录：;EI(收录号：20200708150046);Scopus(收录号：2-s2.0-85079121343);WOS:【SCI-EXPANDED(收录号:WOS:000565378100004)】；

基金：This work was financially supported through the Fundamental Research Funds of Chinese Academy of Forestry (CAFYliti2017ZCO03).

语种：英文

外文关键词：fiber saturation point; heat treatment; mahogany wood; moisture excluding efficiency; wood-water interaction

摘要：Mahogany wood (Swietenia macrophylla King) was thermally modified by heating at various temperatures. The wood-water-related parameters of the heat-treated wood, including fiber saturation point, equilibrium moisture content, moisture excluding efficiency, hygroscopic hysteresis, swelling, anti-swelling efficiency, water adsorption, and surface wettability were determined to clarify the mechanism of heat treatment to reduce wood hygroscopicity. The wood treated at a higher temperature demonstrated a more significant decrease in hygroscopicity. The reduction in hygroscopicity of the heat-treated wood was partially diminished as the moisture excluding efficiency decreased in the absorption and desorption processes caused by the changes in environmental temperature and relative humidity. The fiber saturation point (determined by nuclear magnetic resonance spectroscopy), surface free energy, and the surface wettability of wood were reduced by heat treatment, resulting in the decreased hygroscopicity of the heat-treated wood. Mahogany wood became more insensitive to the influence of moisture due to the heat treatment, and this effect was more distinct for wood treated at a high temperature.