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Response relationships between the color parameters and chemical compositions of heat-treated wood

  • Meihong Liu , Liangliang Zhang , Jiang Chen , Shuang Chen , Yafang Lei ORCID logo , Zhangjing Chen and Li Yan ORCID logo EMAIL logo
Published/Copyright: May 20, 2024
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Abstract

The magnitudes of the color changes in heat-treated wood are closely related to the chemical composition of the wood, and changes in the chemical composition are the essential reasons for changes in the mechanical properties of heat-treated wood. The response relationships among the color parameters of heat-treated wood and the chemical composition were constructed to provide a scientific basis for regulating the mechanical properties with the color. The effects and linear correlations of the lightness indicators (L*) for poplar (Populus tomentosa Carr.) and spruce (Picea asperata Mast.) after heat treatment were related to the chemical compositions of the heat-treated woods by constructing relationships between the L* values. The relative content of cellulose in the heat-treated poplar downward trend and was significantly positively correlated with the L* value; however, the correlation with the L* value for the heat-treated spruce was insignificant. The L* value of the heat-treated wood was significantly positively correlated with the relative contents of hemicellulose, and was significantly negatively correlated with lignin. The L* value of the heat-treated wood had a superior response relationship with the crystallite sizes. Therefore, the constructed response relationship provides a theoretical basis for accurate and nondestructive testing of the mechanical properties of heat-treated wood by using the color parameters as rapid detection indicators.


Corresponding author: Li Yan, Department of Wood Science and Technology, Forestry College, Northwest A & F University, Yangling, Shaanxi 712100, China, E-mail:

Funding source: the National Natural Science Foundation of China

Award Identifier / Grant number: 31971590

Award Identifier / Grant number: 2452019057

Funding source: Natural Science Foundation of Shaanxi Province, China

Award Identifier / Grant number: 2024JC-YBQN-0226

  1. Research ethics: Not applicable.

  2. Author contributions: All authors have accepted responsibility for the entire content of this submitted manuscript and approved submission. Meihong Liu: data curation, Investigation, visualization, writing the original draft. Liangliang Zhang: data curation, investigation, writing-review & editing. Jiang Chen: methodology and investigation. Shuang Chen: methodology and investigation. Yafang Lei: review & editing. Zhangjing Chen: writing – review & editing. Li Yan: resources, supervision, data curation, funding acquisition, methodology, writing – review & editing.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: This study was supported by the National Natural Science Foundation of China (Grant no. 31971590), Fundamental Research Funds for the Central Universities (Grant no. 2452019057) and the Natural Science Foundation of Shaanxi Province, China (Grant no. 2024JC-YBQN-0226).

  5. Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2023-08-15
Accepted: 2024-05-07
Published Online: 2024-05-20
Published in Print: 2024-07-26

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