文献类型：期刊文献

英文题名：Effect of growth ring orientations and location on moisture-induced swelling behavior of Chinese fir wood

作者：Yang, Chen[1,2] Li, Zhu[1] Huang, He[1] He, Zhiyuan[3] Jiang, Jiali[1]

第一作者：Yang, Chen

通信作者：Jiang, JL[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Nanjing Forestry Univ, Nanjing, Peoples R China;[3]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Fenyi, Peoples R China

年份：2025

外文期刊名：WOOD MATERIAL SCIENCE & ENGINEERING

收录：;EI(收录号：20255219793742);Scopus(收录号：2-s2.0-105025454296);WOS:【SCI-EXPANDED(收录号:WOS:001645436500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (32401511) and the Fundamental Research Funds of the Chinese Academy of Forestry (CAFYBB2023MA019).

语种：英文

外文关键词：Chinese fir; adsorption; swelling; growth ring orientation; sapwood; heartwood

摘要：In this study, the moisture adsorption and swelling behavior of Chinese fir (Cunninghamia lanceolata) wood in different growth ring orientations and locations were investigated. Heartwood specimens were divided into alpha = 90 degrees(H-90 degrees), 45 degrees <=alpha<90 degrees(H45-90 degrees), and 0 degrees <=alpha<45 degrees(H0-45 degrees), along with specimens obtained from transition wood (T0-45 degrees) and sapwood (S0-45 degrees) in the same angle of 0 degrees <=alpha<45 degrees. Approximately 70% changes in moisture adsorption content and swelling in the thickness and width were observed during the initial 4-day period, and then moisture content (MC) and swelling reached equilibrium on the 16th day, irrespective of growth ring orientations and location. In comparison with length swelling, swelling in the width and thickness directions were closely related to alpha angle. For heartwood specimens, the width swelling was negatively correlated with alpha angle, while the thickness swelling was positively correlated with alpha angle. For specimens with the same angle, MC and swelling followed the order of S0-45 degrees>T0-45 degrees>H0-45 degrees, which was attributed to the higher holocellulose and lower extractives content. Furthermore, swelling in the width and thickness directions increased first and then decreased with increasing alpha angle. These findings will be helpful to understand the hygro-deformation of wood in different growth ring orientations and locations, and provide a scientific basis for the utilization of solid wood.