Characteristics of Ancient Shipwreck Wood from Huaguang Jiao No. 1 after Desalination

被引：4

作者：

Liu, Xinyou ^{[1
,2
,3
,4
]}

Zhu, Lulu ^{[2
]}

Tu, Xinwei ^{[2
]}

Zhang, Changjun ^{[2
]}

Huang, Houyi ^{[2
]}

Varodi, Anca Maria ^{[3
]}

机构：

[1] Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Str Longpan 159, Nanjing 210037, Peoples R China

[2] Nanjing Forestry Univ, Coll Furnishing & Ind Design, Str Longpan 159, Nanjing 210037, Peoples R China

[3] Transilvania Univ Bra?ov, Fac Furniture Design & Wood Engn, Bra?ov 500036, Romania

[4] Nanjing Forestry Univ, Adv Anal & Testing Ctr, Str Longpan 159, Nanjing 210037, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 02期

关键词：

microscopy; waterlogged archaeological wood; SEM; XRD; FTIR; nanoindentation; DEGRADATION; STATE; PEG;

D O I：

10.3390/ma16020510

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Huaguangjiao I refers to the ancient Chinese wooden shipwreck of the South Song Dynasty (1127-1279 AD) discovered in the South China Sea in 1996. From 2008 to 2017, the archaeological waterlogged wood was desalted using deionized water combined with ultrasonic treatment, and desalted using EDTA-2Na, EDTAHO, and NaH2PO4 center dot 2H(2)O solutions. In this paper, the degree of degradation of the modified waterlogged archaeological wood and the moisture and content of the main components were determined. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nanoindentation (NI), and scanning electron microscopy (SEM) were employed to investigate the state of wood degradation after desalination and desulfurization. The results showed that the water content of the wood was as high as 532 similar to 1149%, while the basic density was only 0.14 similar to 0.18 g/cm(3), indicating that the wood had been seriously degraded. The holocellulose content was only 36-40%. Based on the XRD patterns, the degree of cellulose crystallinity in the modified wood was 14.08%. The elastic modulus and hardness of the ancient shipwreck wood after desalination and desulfurization were 1.28-4.31 and 0.10-0.28 GPa, respectively, according to nanoindentation. In addition, the FTIR spectra revealed that the biological deterioration of the modified wood caused cellulose and hemicellulose degradation, but no apparent lignin alteration occurred. The results could provide knowledge for appropriate dewatering, strengthening, and restoration strategies.

引用

页数：10