文献类型：期刊文献

英文题名：Hygroscopicity of Waterlogged Archaeological Wood from Xiaobaijiao No.1 Shipwreck Related to Its Deterioration State

作者：Han, Liuyang[1,2] Guo, Juan[1,2] Wang, Kun[3] Gronquist, Philippe[4,5] Li, Ren[1,2] Tian, Xingling[6] Yin, Yafang[1,2]

第一作者：Han, Liuyang

通信作者：Yin, YF[1];Yin, YF[2]

机构：[1]Chinese Acad Forestry, Dept ofWood Anat & Utilizat, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Wood Collect WOODPEDIA, Beijing 100091, Peoples R China;[3]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[4]Swiss Fed Inst Technol, Wood Mat Sci, CH-8093 Zurich, Switzerland;[5]Empa, Lab Cellulose & Wood Mat, CH-8600 Dubendorf, Switzerland;[6]Chinese Acad Cultural Heritage, Heritage Conservat & Restorat Inst, Beijing 100029, Peoples R China

年份：2020

卷号：12

期号：4

外文期刊名：POLYMERS

收录：;EI(收录号：20202508858075);Scopus(收录号：2-s2.0-85086637377);WOS:【SCI-EXPANDED(收录号:WOS:000535587700104)】；

基金：This work was funded by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF, grant number CAFYBB2018QB006, the Chinese National Natural Science Foundation, grant number 310600450 and the scholarship from China Scholarship Council, grant number CSC201803270037.

语种：英文

外文关键词：morphological structure; sorption behavior; sorption fitting model; compositional analysis; hydroxyl accessibility

摘要：Waterlogged archaeological wood (WAW) artifacts, made of natural biodegradable polymers, are important parts of many precious cultural heritages. It is of great importance to understand the hygroscopic behavior of WAW in different deterioration states for the development of optimal drying processes and choices of safe storage in varying conditions. This was investigated in a case-study using two Hopea (Giam) and two Tectona (Teak) WAW samples collected from the Xiaobaijiao No.1 shipwreck. The deterioration state of WAW was evaluated by the maximum water content (MWC) method and by the cell morphological structure. Both Hopea and Tectona WAW could be classified into moderately and less decayed WAW. The hygroscopic behavior of moderately and less decayed WAW was then comparatively investigated using Dynamic Vapor Sorption (DVS) measurements alongside two sorption fitting models. Compositional analysis and hydroxyl accessibility measurements of WAW cell walls were shown to correlate with the hygroscopicity of WAW in different deterioration states. It was concluded that moderately decayed WAW possessed higher hygroscopicity and hysteresis than less decayed WAW because of the lower relative content of polysaccharides and the higher relative content of lignin, including the slow hydrolysis of O-acetyl groups of xylan and the partial breakage of beta-O-4 interlinks, accompanied by an increased hydroxyl accessibility. This work helps in deciding on which consolidation measures are advised for shipwreck restauration, i.e., pretreatments with specific consolidates during wood drying, particularly for wooden artifacts displayed in museums.