文献类型：期刊文献

英文题名：Physicochemical structure and micromechanical properties of archaeological wood under alternating dry and wet conditions

作者：Chu, Shimin[1] Lin, Lanying[1] Zhang, Yu[1] Wang, Dong[2]

第一作者：Chu, Shimin

通信作者：Lin, LY[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Northwest Polytech Univ Culture & Heritage, Xian, Peoples R China

年份：2023

外文期刊名：WOOD MATERIAL SCIENCE & ENGINEERING

收录：;EI(收录号：20234915153303);Scopus(收录号：2-s2.0-85178170116);WOS:【SCI-EXPANDED(收录号:WOS:001110689900001)】；

基金：Author contributions: Conceptualisation, S.C., L.L., and D.W.; methodology, S.C.; software, S.C., and Y.Z.; validation, L.L. and D.W.; formal analysis, L.L.; investigation, S.C.; resources, L.L.; data curation, S.C.; writing - original draft preparation, S.C.; writing - review and editing, L.L., and D.W.; visualisation, S.C., and Y.Z.; supervision, L.L.; project administration, D.W.; funding acquisition, D.W.

语种：英文

外文关键词：Archaeological wood; cell walls; physicochemical structure; micromechanical properties

摘要：The relationship between physicochemical structure and micromechanical properties of archaeological wood is not understand. For this purpose, the study took the archaeological wood from the Shahe Ancient Bridge site as an example. The physical properties, microstructure, chemical composition, and micromechanics of archaeological wood were evaluated using non-destructive and micro-destructive techniques. The results indicated that the deterioration of Phoebe sp. wood was more severe than that of Abies sp. wood. However, the basic density of Phoebe sp. wood was higher than that of the control sample due to the collapse of cell walls. The cell walls exhibited a variety of destructional forms, such as cavities and collapses, caused by decay fungi and erosion bacteria. The cell cavities and cell walls deposited inorganic substances. Furthermore, hemicellulose and amorphous cellulose were preferentially degraded before crystalline cellulose was degraded, and S-type lignin was more prone to degradation compared to G-type lignin. Due to the changes of cell wall structure, the hardness of the cell walls increased while the elastic modulus of the cell wall decreased significantly. This study may provide a reference for the study of the relationship between cell wall structure and micromechanics of archaeological wood.