Preparation and Spectra Study of Artificially Degraded Waterlogged Wood

Meng-ruo WU; Zhen-fang QIN; Liu-yang HAN; Xiang-na HAN

doi:10.3964/j.issn.1000-0593(2022)09-2941-06

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 9 >Page 2941 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 9, 2941 (2022)

Preparation and Spectra Study of Artificially Degraded Waterlogged Wood

Meng-ruo WU^*, Zhen-fang QIN, Liu-yang HAN, and Xiang-na HAN^*;

Author Affiliations

Institute of Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China

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DOI: 10.3964/j.issn.1000-0593(2022)09-2941-06 Cite this Article

Meng-ruo WU, Zhen-fang QIN, Liu-yang HAN, Xiang-na HAN. Preparation and Spectra Study of Artificially Degraded Waterlogged Wood[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2941 Copy Citation Text

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Pictures of waterlogged (a) and dried (b) artificially degraded waterlogged wood samplesA1: 20% NaOH impregnation (3 d); A2: 20% NaOH impregnation (5 d); A3: 20% NaOH impregnation (7 d); A4: 20% NaOH impregnation (14 d); B1: Water-hydrothermal method; B2: 1%NaOH-hydrothermal combined method; B3: 1%NaOH-vacuum impregnation-hydrothermal combined method

Fig. 1. Pictures of waterlogged (a) and dried (b) artificially degraded waterlogged wood samples
A1: 20% NaOH impregnation (3 d); A2: 20% NaOH impregnation (5 d); A3: 20% NaOH impregnation (7 d); A4: 20% NaOH impregnation (14 d); B1: Water-hydrothermal method; B2: 1%NaOH-hydrothermal combined method; B3: 1%NaOH-vacuum impregnation-hydrothermal combined method

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Fig. 2. FTIR spectra of artificially degraded waterlogged wood samples
(a): NaOH method; (b): Hydrothermal method

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Fig. 3. NIR spectra of artificially degraded waterlogged wood samples
(a): NaOH method; (b): Hydrothermal method

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处理方法	质量损失率/%	基本密度/(g·cm^-3)	最大含水率/%
对照组	4.51±0.37	0.333±0.012	227.60±17.28
20%NaOH浸渍(3 d)	23.71±3.13	0.307±0.022	255.80±22.70
20%NaOH浸渍(5 d)	25.33±3.12	0.286±0.022	274.44±27.32
20%NaOH浸渍(7 d)	31.23±1.75	0.309±0.031	262.99±33.11
20%NaOH浸渍(14 d)	31.26±3.50	0.313±0.015	254.14±16.71
纯水-水热	33.89±0.48	0.247±0.012	340.23±19.97
1%NaOH-水热联用	51.55±1.87	0.182±0.004	524.33±82.36
1%NaOH-真空浸渍-水热联用	47.57±0.17	0.158±0.018	575.87±70.98

Table 1. The mass loss, basic density and maximum water content of artificially degraded waterlogged wood samples

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处理方法	湿硬度值/HA			相对对照组降低比例/%
处理方法	横切面	径切面	弦切面	横切面	径切面	弦切面
对照组	118.00±2.21	108.58±6.87	112.50±2.59	-	-	-
20%NaOH浸渍(3 d)	86.75±5.05	90.23±4.52	94.94±5.22	26.48	16.90	15.61
20%NaOH浸渍(5 d)	78.50±5.69	82.15±6.07	88.73±7.02	33.47	24.34	21.13
20%NaOH浸渍(7 d)	86.25±9.26	88.48±5.60	91.17±10.94	26.91	18.51	18.96
20%NaOH浸渍(14 d)	77.71±7.67	87.19±6.51	87.81±11.45	34.14	19.70	21.95
纯水-水热	95.78±8.35	90.72±7.65	93.00±5.34	18.83	16.45	17.33
1%NaOH-水热联用	55.69±6.51	71.17±7.65	77.75±8.61	52.81	34.45	30.89
1%NaOH-真空浸渍-水热联用	45.94±5.57	64.21±6.42	74.36±7.60	61.07	40.86	33.90

Table 2. Hardness value and reduction ratio of artificially degraded waterlogged wood

Meng-ruo WU, Zhen-fang QIN, Liu-yang HAN, Xiang-na HAN. Preparation and Spectra Study of Artificially Degraded Waterlogged Wood[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2941

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