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Effect of plasma treatment on the surface characteristics and adhesive penetration performance of heat-treated wood

  • Yaqian Huang , Junfeng Wang , Xianxu Zhan , Changtong Mei , Wanzhao Li , Yuhe Deng and Xinzhou Wang EMAIL logo
Published/Copyright: September 15, 2022
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Holzforschung
From the journal Holzforschung Volume 76 Issue 10

Abstract

The present study used an atmospheric dielectric barrier discharge (DBD) plasma treatment to modify the interfacial properties of heat-treated wood (HTW). The changes in the wood surface characteristics, such as the microstructure, chemical structure, and wettability, were investigated using scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), Fourier-transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). Further, the fluorescent tracer technique was used to analyze the effect of plasma treatment on the adhesive penetration inwood. Results showed that the wettability of water and phenol-formaldehyde adhesives on the surface of HTW significantly improved after plasma treatment due to the increase in the hydrophilic and oxygen-containing functional groups. The average penetration (AP) and effective penetration (EP) of the phenolic adhesive into HTW also increased significantly after plasma treatment; the AP value of the E-E (earlywood bound to earlywood) HTW samples increased from 909 to 1674 μm, and the EP value from 60 to 183 μm upon plasma treatment. These observations indicate that the DBD plasma treatment is a promising method to improve the bonding properties of the glued HTW products.

Keywords: adhesive penetration; chemical properties; heat-treated wood; microstructure; wettability
Corresponding author: Xinzhou Wang, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, 210037, China; and Dareglobal Technologies Group Co. Ltd., Danyang, 212310, China, E-mail:

Funding source: The Nanjing Forestry University Scientific Research Start-up Foundation

Award Identifier / Grant number: GXL2020003

Funding source: China Postdoctoral Science Foundation

Award Identifier / Grant number: 2021M690531

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: 31901374

Funding source: The Open Project Program of Guangxi Zhuang Autonomous Region Key Laboratory

Award Identifier / Grant number: 2020B-02-03

  1. Author contributions: YH performed the SEM, FTIR and the contact angle experiments, and wrote the majority of the manuscript. JW, XZ and WL performed the preparation of materials and data collection. CM and YD designed the part of the experiments. XW designed the experiments, wrote a part of the manuscript and supervised the work. All authors read and approved the final manuscript.

  2. Research funding: The project was sponsored by the project of the project of National Natural Science Foundation of China (31901374), the Open Project Program of Guangxi Zhuang Autonomous Region Key Laboratory (2020B-02-03), China Postdoctoral Science Foundation (2021M690531), and the Nanjing Forestry University Scientific Research Start-up Foundation (GXL2020003).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-02-12
Accepted: 2022-08-31
Published Online: 2022-09-15
Published in Print: 2022-10-26

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Articles
  3. Flexural behavior of wood in the transverse direction investigated using novel computer vision and machine learning approach
  4. Elasto-plastic material model of oak at two moisture content levels
  5. Evaluating wettability of vessels in poplar by Micro-CT imaging
  6. Volume fractal and surface fractal analysis of the pore structure of natural and heat-treated spruce wood using the mercury intrusion porosimetry test
  7. Effect of pressurized hot water extraction and esterification on the moisture properties and decay resistance of Scots pine (Pinus sylvestris L.) sapwood
  8. Improvement on dimensional stability and mold resistance of wood modified by tannin acid and tung oil
  9. Effect of plasma treatment on the surface characteristics and adhesive penetration performance of heat-treated wood
https://doi.org/10.1515/hf-2022-0031
Keywords for this article
adhesive penetration; chemical properties; heat-treated wood; microstructure; wettability

Articles in the same Issue

  1. Frontmatter
  2. Original Articles
  3. Flexural behavior of wood in the transverse direction investigated using novel computer vision and machine learning approach
  4. Elasto-plastic material model of oak at two moisture content levels
  5. Evaluating wettability of vessels in poplar by Micro-CT imaging
  6. Volume fractal and surface fractal analysis of the pore structure of natural and heat-treated spruce wood using the mercury intrusion porosimetry test
  7. Effect of pressurized hot water extraction and esterification on the moisture properties and decay resistance of Scots pine (Pinus sylvestris L.) sapwood
  8. Improvement on dimensional stability and mold resistance of wood modified by tannin acid and tung oil
  9. Effect of plasma treatment on the surface characteristics and adhesive penetration performance of heat-treated wood
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