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Forests
Special Issues
Wood Materials: Preservation and Modification
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Wood Materials: Preservation and Modification

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Wood Science and Forest Products".

Deadline for manuscript submissions: closed (25 April 2024) | Viewed by 2910

Special Issue Editors

Dr. Xinzhou Wang

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China
Interests: bio-material; wood; bamboo; mechanical properties; interfacial properties; materials preservation and modification
Special Issues, Collections and Topics in MDPI journals
Dr. Jiangtao Shi

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
Interests: wood; chemical modification; wood properties

Special Issue Information

Dear Colleagues,

Wood is a construction product characterized by a high strength to weight ratio, low heat conductivity and easy machinability. It also binds carbon and thus
contributes to reducing the CO2 content in the atmosphere. However, despite its many positive features, wood also has some disadvantages, such as low dimensional stability, low resistance to wood-degrading fungi and flammability. In the past few decades, some studies have aimed to improve wood quality through physical, chemical and biological modifications, among other strategies. However, there are still many problems to be solved.

This Special Issue will focus on new techniques and the optimization of processing parameters for wood preservation and modification. Changes in relevant wood properties, including dimensional stability, biological durability, mechanical properties and multi-scale fire retardancy, are of interest. Moreover, submissions detailing advanced characterization techniques that have application potential in the field of wood preservation and modification are also welcome.

Dr. Xinzhou Wang
Dr. Jiangtao Shi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wood
  • preservation
  • modification
  • chemistry
  • physical and biological method
  • advanced characterization techniques

Published Papers (3 papers)

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Research

12 pages, 3371 KiB  
Article
Biodeterioration Field Test and Mechanical Properties of Maesopsis eminii Wood Treated with Boron Preservative and Plant Oils
by Trisna Priadi, Muhammad Hilmy Badruzzaman, Nurul Sofiaturizkiyah, Andi Hermawan, Jamaludin Malik and Rudi Hartono
Forests 2024, 15(3), 466; https://doi.org/10.3390/f15030466 - 01 Mar 2024
Viewed by 664
Abstract
Boron preservatives have insecticidal and fungicidal effects. The leaching problem of boron preservative-treated wood can be overcome using oil treatment. This study evaluated the resistance in a biodeterioration field test and the mechanical properties of manii wood (Maesopsis eminii Engl.) treated with [...] Read more.
Boron preservatives have insecticidal and fungicidal effects. The leaching problem of boron preservative-treated wood can be overcome using oil treatment. This study evaluated the resistance in a biodeterioration field test and the mechanical properties of manii wood (Maesopsis eminii Engl.) treated with boric acid and plant oils. Manii wood samples were impregnated in two stages with boric acid and vegetable oils (neem, tamanu, and candlenut oils). The impregnation process was performed in a chamber at a pressure of 7 kg cm−2 for approximately 4 h. Next, the sample was heated at temperatures of 60 °C, 120 °C, and 180 °C. The biodeterioration field test was conducted in ground contact for 100 days. In addition, mechanical tests in terms of modulus of elasticity (MOE), modulus of rupture (MOR), and hardness were conducted using an Instron universal testing machine. The test results prove that the combination of boric acid preservation with neem, tamanu, or candlenut oil treatment increases the resistance of manii wood to subterranean termites, especially when the treatment is accompanied by heating at 120 °C. The combination treatment of boric acid and plant oils also increases the MOE, MOR, and hardness values of manii wood. Full article
(This article belongs to the Special Issue Wood Materials: Preservation and Modification)
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13 pages, 4012 KiB  
Article
Flame-Retardant and Smoke-Suppression Properties of Bamboo Scrimber Coated with Hexagonal Boron Nitride
by Gaihuan Li, Ying Yu, Shaofei Yuan, Wenfu Zhang and Xinzhou Wang
Forests 2023, 14(10), 2105; https://doi.org/10.3390/f14102105 - 20 Oct 2023
Cited by 1 | Viewed by 969
Abstract
In order to improve the flame-retardant properties of bamboo scrimber, chitosan (CS) and polyvinyl alcohol (PVA) were used as the film-forming substances, and hexagonal boron nitride (h-BN) was used as the flame-retardant substance to prepare h-BN flame-retardant coatings, which were coated on the [...] Read more.
In order to improve the flame-retardant properties of bamboo scrimber, chitosan (CS) and polyvinyl alcohol (PVA) were used as the film-forming substances, and hexagonal boron nitride (h-BN) was used as the flame-retardant substance to prepare h-BN flame-retardant coatings, which were coated on the surface of the bamboo scrimber. The effects of the h-BN flame-retardant coatings with different quality concentrations on the flame-retardant properties of the bamboo scrimber, as well as on the morphology of the residual carbon, were investigated using the analytical methods of FTIR, environmental scanning electron microscopy, thermogravimetric analysis, combustion test, and coating adhesion test. The results showed that the h-BN flame-retardant coating could improve the thermal stability of the bamboo scrimber and that the higher the mass concentration, the better the thermal stability of the h-BN. Compared to the control, the time to ignition (TTI) of the 5% h-BN flame-retardant-treated specimens increased by 56%; the peak heat release rate (Pk-HRR), total heat release (THR), and total smoke production (TSP) decreased by 9.92%, 7.54%, and 32.35%, respectively; however, due to the presence of PVA, the peak smoke production rate (Pk-SPR) increased by 17.78%. The 5% h-BN coating had very good adhesion, with an adhesion grade of zero. In conclusion, the h-BN coating could be well-adhered to the surface of the bamboo scrimber, and the 5% h-BN flame-retardant coating had a better flame retardancy compared to other treatments, meaning that it could provide a new strategy for improving the flame-retardant properties of bamboo scrimber for construction use. Full article
(This article belongs to the Special Issue Wood Materials: Preservation and Modification)
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14 pages, 4155 KiB  
Article
Mechanistic Study of the Synergistic Interaction of Furfuryl Alcohol and Caprolactam in the Modification of Pinus massoniana Earlywood and Latewood
by Ziheng Wang, Sheng He, Jiangtao Shi, Xuefeng Zhang and Weiqi Leng
Forests 2023, 14(6), 1242; https://doi.org/10.3390/f14061242 - 15 Jun 2023
Viewed by 903
Abstract
Furfurylated wood has many advantages, such as decay resistance, dimensional stability, hardness, etc. However, furfurylation increases the brittleness and decreases the flexural resistance of wood, which greatly limits its application. Therefore, caprolactam (CPL) is incorporated with furfuryl alcohol (FA) to improve the performance [...] Read more.
Furfurylated wood has many advantages, such as decay resistance, dimensional stability, hardness, etc. However, furfurylation increases the brittleness and decreases the flexural resistance of wood, which greatly limits its application. Therefore, caprolactam (CPL) is incorporated with furfuryl alcohol (FA) to improve the performance of furfurylated wood. In this study, an FA and CPL combinational modifier was used to treat masson pine (Pinus massoniana Lamb.) earlywood and latewood. The synergistic interaction of both components with the wood cell walls was systematically evaluated via microstructural, chemical, and thermal analysis using scanning electron microscopy (SEM), infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectrometry (XPS), and differential scanning calorimetry (DSC). The SEM images showed that polymerized modifiers were distributed in tracheids, ray cells, and pits, with a higher degree of distribution in latewood tissues. The FA-CPL co-treatment led to the highest degree of distribution in cell cavities as well as of cell wall swelling. The results of the weight percentage gain (WPG) of modified wood agreed with the SEM findings that the FA-CPL co-treatment could more effectively increase the WPG than individual modification. The results of FTIR and XPS revealed that FA and CPL might chemically bind with each other as well as react with lignin and hemicellulose in the cell walls during the curing process. In addition, the interactions between modifiers and cell walls were slightly different for earlywood and latewood. DSC analysis indicated that the wood hygroscopicity decreased and the thermal stability improved after modification. Full article
(This article belongs to the Special Issue Wood Materials: Preservation and Modification)
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