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

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
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

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

Fig. 3. NIR spectra of artificially degraded waterlogged wood samples
(a): NaOH method; (b): Hydrothermal method
(a): NaOH method; (b): Hydrothermal method
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Table 1. The mass loss, basic density and maximum water content of artificially degraded waterlogged wood samples
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Table 2. Hardness value and reduction ratio of artificially degraded waterlogged wood

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