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Polymers
Special Issues
Durability and Modification of Wood Surfaces II
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Durability and Modification of Wood Surfaces II

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 2750

Special Issue Editor

Prof. Dr. Vlatka Jirouš-Rajković

E-Mail Website
Guest Editor
Department of Wood Technology, Faculty of Forestry and Wood Technology, University of Zagreb, 10000 Zagreb, Croatia
Interests: wood coatings; wood surface modification; durability of wood coating systems; wood surface properties
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wood is a biomaterial with a unique structure, and its surface is the result of the interaction of wood processing technologies, raw wood material, and time. The surface of wood significantly affects the visual appearance and tactile properties of wood and can affect the process of gluing and coating. Wood interacts with its environment through its surfaces, and various physical, biological, and chemical factors can cause significant changes or even degradation and decay of wood. Most of these changes take place on the surface or start from the surface. The type of environmental factors to which the wood surface is exposed as well as the length of exposure will affect the durability of the wood surface. To ensure long-term performance in both interior and exterior applications, wood should be protected by appropriate coating systems or by surface modification treatments. Various physical, chemical, or combined (physical and chemical) wood surface modification methods can improve surface properties, such as increased adhesion property, improved wettability, enhanced water repellence, etc. Innovative modification treatments based on nanotechnology are promising for wood surfaces where the general trend requires as few visible changes as possible due to environmental and economic concerns as well as for aesthetic reasons. This Special Issue covers all methods of surface modification that can improve the UV and weathering durability, decay resistance, mechanical durability, fire retardancy, and hydrophobicity of wood surface or improve its compatibility with adhesives and coatings. The aim of this Special Issue is to increase the knowledge of wood surface modification by collecting the latest research information.

Prof. Dr. Vlatka Jirouš-Rajković
Guest Editor

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. Polymers is an international peer-reviewed open access semimonthly 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 2700 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 surface durability
  • performance of modified wood surface
  • chemical modification of wood surface
  • sol–gel treatments and deposition of nanoparticles
  • mechanical treatments of wood surfaces
  • densification of wood surfaces
  • plasma treatments
  • radiation-induced surface modification
  • characterization of wood surfaces

Published Papers (2 papers)

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Research

17 pages, 4359 KiB  
Article
Modification of Cellulosic Materials with Boron-Nitrogen Compounds
by Irina Stepina, Aleksey Zhukov and Sofia Bazhenova
Polymers 2023, 15(13), 2788; https://doi.org/10.3390/polym15132788 - 23 Jun 2023
Cited by 3 | Viewed by 845
Abstract
Wood fiber and its products are modified to increase fire and bio-resistance. The best results are achieved by using modifiers that enter into chemical interaction with the hydroxylated substrate, forming the organic matrix of the materials. The purpose of the research described in [...] Read more.
Wood fiber and its products are modified to increase fire and bio-resistance. The best results are achieved by using modifiers that enter into chemical interaction with the hydroxylated substrate, forming the organic matrix of the materials. The purpose of the research described in the article was to study the possibility of using boron-nitrogen compounds to modify cellulose and cellulose-containing materials to improve the performance, bio- and fire-protective properties of construction materials, as well as to optimize the consumption of boron-nitrogen compounds. As a result of the research, it was found that the boron-nitrogen compounds used in the compositions developed here chemically interact with hydroxyl groups at the C6-atom of cellulose. The chemical interaction of boron-nitrogen compounds with cellulose is an inter-crystalline process occurring without destruction of the crystal structure of the substrate since the modifier molecules bind with the more accessible hydroxyl groups of the amorphous regions of cellulose. Thus, surface modification with boron-nitrogen compounds does not result in accelerated aging of cellulose-containing materials and loss of strength but, on the contrary, increases the durability of wooden structures. Full article
(This article belongs to the Special Issue Durability and Modification of Wood Surfaces II)
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22 pages, 9981 KiB  
Article
Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure
by Lidia Gurău, Maria Cristina Timar, Camelia Coșereanu, Mihaela Cosnita and Mariana Domnica Stanciu
Polymers 2023, 15(7), 1794; https://doi.org/10.3390/polym15071794 - 05 Apr 2023
Cited by 3 | Viewed by 1568
Abstract
The acoustic features of old resonance wood in violins exhibit a superior quality when compared to those from new resonance wood. This study focuses on an assessment of the sound quality of two types of wood for musical instruments, spruce and maple (class [...] Read more.
The acoustic features of old resonance wood in violins exhibit a superior quality when compared to those from new resonance wood. This study focuses on an assessment of the sound quality of two types of wood for musical instruments, spruce and maple (class A and D), before and after aging via thermal and UV exposure. The samples were characterized before and after UV aging in terms of color change (using a Chroma meter), surface morphology (using a MarSurf XT20 instrument), chemical changes (monitored by FTIR spectroscopy), and sound propagation speed (using an ultrasound device). After UV treatment, the wavier surface increased the area of exposure and degradation. Also, the color changes were found to be more accentuated in the case of spruce compared to sycamore maple. The FTIR results indicated more advanced aging processes for spruce when compared to maple under the same experimental conditions. This difference resulted mostly from the increased formation of carbonyl-containing chromophores via oxidative processes in spruce rather than in maple, which is in agreement with the color change findings. Exposure of both species to thermal and UV radiation led to an increase in sound propagation speed, both longitudinally and radially, and to a greater extent in wood quality class A when compared to quality class D. Full article
(This article belongs to the Special Issue Durability and Modification of Wood Surfaces II)
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