文献类型：期刊文献

英文题名：Molecular and crystal structures of cellulose in severely deteriorated archaeological wood

作者：Guo, Juan[1,2] Chen, Jiabao[1,2] Meng, Qiulu[1,2,3] Ploszczanski, Leon[4] Liu, Jian'an[5] Luo, Rupeng[5] Jin, Tao[6] Siedlaczek, Philipp[4] Lichtenegger, Helga C.[4] Yin, Yafang[1,2] Rennhofer, Harald[4]

第一作者：Guo, Juan;郭娟

通信作者：Yin, YF[1];Yin, YF[2];Rennhofer, H[3]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Wood Collect Chinese Acad Forestry, Beijing 100091, Peoples R China;[3]Guangxi Univ, Sch Resources Environm & Mat, 100 Daxue East Rd, Nanning 530004, Peoples R China;[4]Univ Nat Resources & Life Sci, Inst Phys & Mat Sci, Dept Mat Sci & Proc Engn, A-1190 Vienna, Austria;[5]Zhejiang Prov Inst Cultural Rel & Archaeol, Jiaogong Rd 71, Hangzhou 310012, Zhejiang, Peoples R China;[6]Ningbo Municipal Inst Cultural Heritage Managemen, Baoshan Rd 180, Ningbo 315012, Zhejiang, Peoples R China

年份：0

外文期刊名：CELLULOSE

收录：;EI(收录号：20224313000418);Scopus(收录号：2-s2.0-85140215798);WOS:【SCI-EXPANDED(收录号:WOS:000868469300002)】；

基金：This work is financially supported by "National Key R&D Program of China" (2020YFC1521800), the department of Science and Technology, National Forestry and Grassland Administration (2020132601) and the "Chinese National Natural Science" Foundation (31600450). Open access funding provided by University of Natural Resources and Life Sciences, Vienna (BOKU). The authors have not disclosed any funding.

语种：英文

外文关键词：Archaeological wood; Cellulose; Molecular structure; Crystal structure; X-ray scattering

摘要：Preservation and conservation of archaeological wooden artifacts is extremely challenging due to a lack of knowledge about the hierarchical structure of preserved cellulose. Herein we report on the comparative analysis of eight archaeological and four recent wood samples from three archaeological sites in China by a variety of methods, including micro-morphology, Fourier Transform Infrared Spectrum, X-ray scattering, chromatographic analysis of wood sugars, and solid state C-13 CP/MAS NMR. Results show that deterioration on the microscale is clearly related to a fragmentation of both the cellulose crystallite structure and the cellulose microfibrils. Slightly deteriorated archaeological wood features cellulose crystallites and microfibrils, comparable to non-degraded recent wood, whereas severely deteriorated wood shows higher porosity of the wood cell wall, fragmented cellulose aggregates instead of fibrils and nearly no crystallinity. Alterations in molecular structures resulted in advanced degradation of both amorphous and crystalline cellulose domains. Only a small amount of cellulose was preserved. The data allows to assume highly fragmented but still partially crystalline cellulose lamellas.