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Coatings
Special Issues
Recent Advances in Wood Coatings
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Recent Advances in Wood Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Functional Polymer Coatings and Films".

Deadline for manuscript submissions: 18 January 2025 | Viewed by 3714

Special Issue Editors

Dr. Stefano Rossi

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Trento, 38123 Trento, Italy
Interests: coatings for corrosion protection and perception properties
Special Issues, Collections and Topics in MDPI journals
Dr. Massimo Calovi

E-Mail Website
Guest Editor
Department of Industrial Engineering, University of Trento, 38123 Trento, Italy
Interests: multifunctional coatings and bio-based fillers

Special Issue Information

Dear Colleagues,

Due to a variety of diverse chemical and physical characteristics, as well as the fact that it is a plentiful and simple element, wood has been one of the materials most frequently employed by humans since ancient times. The usage of wood has increased over time, and today, it is mostly utilized for structural purposes, construction, the furniture industry, and interior design. Due to the unique combination of qualities of wood, including its high strength-to-weight ratio, simplicity of production, and carbon neutrality, it has a wide range of industrial applications. Additionally, wood is valued for its distinct aesthetic qualities. However, the lignocellulose character of this material, such as its high flammability or poor durability when exposed to moisture and solar radiation, has frequently decreased and limited the use of wood in several industrial applications. Therefore, whether they are used for indoor or outdoor applications, wooden components are frequently coated with organic coatings to prevent these degrading events and increase their durability. The primary purpose of these coatings is to protect hardwood materials from UV rays, changes in humidity, chemical attacks, mechanical damage, and the spread of pathogenic organisms such as fungi. The widespread use of wood in outdoor applications has motivated researchers and businesses to search for creative ways to enhance the UV absorption properties and aesthetic durability of wood coatings, among other functions. Thus, this Special Issue of Coatings has been assembled to promote the dissemination of knowledge of the most innovative and recent research on the deposition and application of wood coatings.

The theme of this Special Issue broadly includes (but is not limited to):

  • Natural organic wood coatings;
  • Functional fillers for wood coatings;
  • Durability of wood coatings;
  • Innovative pigments for wood coatings;
  • Specific applications of wood coatings.

Dr. Stefano Rossi
Dr. Massimo Calovi
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. Coatings 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 coatings
  • functional filler
  • coatings durability
  • innovative pigments

Published Papers (3 papers)

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Research

12 pages, 3057 KiB  
Article
Effects of Photoinitiators on Curing Performance of Wood Wax Oil Coating on Wood
by Dan Zhang and Kuiyan Song
Coatings 2024, 14(1), 2; https://doi.org/10.3390/coatings14010002 - 19 Dec 2023
Viewed by 847
Abstract
With the increasing shortage of petroleum resources and the growing seriousness of environmental pollution, the exploitation and application of bio-based coatings derived from renewable resources have become increasingly important for the woodworking industry. Wood wax oil (WWO) is a new type of bio-based [...] Read more.
With the increasing shortage of petroleum resources and the growing seriousness of environmental pollution, the exploitation and application of bio-based coatings derived from renewable resources have become increasingly important for the woodworking industry. Wood wax oil (WWO) is a new type of bio-based natural coating material that offers an eco-friendly solution for wood protection. This paper focused on the utilization of tung oil and beeswax as the primary raw materials for the preparation of wood wax oil. The WWO was based on the oxidation polymerization of tung oil, which served as the foundation for the preparation process. The effects of the photoinitiator TPO-L on the curing performance of the WWO were investigated, and the curing mechanism of the WWO system induced by photoinitiators was analyzed and characterized by infrared spectroscopy. Through ultraviolet irradiation experiments and coating quality tests, the effects of incremental photoinitiators on the properties of the surface drying time, gloss, color, hydrophobicity, and solution resistance of the treated ash wood were studied. The results indicated that the addition of photoinitiators was beneficial for the rapid polymerization of wood wax oil. A UV light intensity of 30 w was found to be sufficient to initiate the curing process. Specifically, when using TPO-L as the initiator at a concentration of 3 wt%, the surface could be surface-dried within 10 min under UV exposure. Under these curing conditions, wood wax oil coatings based on tung oil with comprehensive curing properties can be obtained. Additionally, adding 6% beeswax to the tung oil can effectively enhance the hydrophobicity of pure tung-oil-based wood protective coatings. Full article
(This article belongs to the Special Issue Recent Advances in Wood Coatings)
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15 pages, 937 KiB  
Article
Effects of Air Exchange Rate on VOCs and Odor Emission from PVC Veneered Plywood Used in Indoor Built Environment
by Mengting Ge, Yongli Zheng, Yifanzi Zhu, Jintian Ge and Qin Zhang
Coatings 2023, 13(9), 1608; https://doi.org/10.3390/coatings13091608 - 14 Sep 2023
Viewed by 943
Abstract
As people spend more than 80% of the day in an indoor built environment, indoor air quality pollution caused by volatile organic compounds (VOCs) emitted from wood-based panels has attracted attention. PVC veneered plywood used in the indoor built environment and relevant VOCs [...] Read more.
As people spend more than 80% of the day in an indoor built environment, indoor air quality pollution caused by volatile organic compounds (VOCs) emitted from wood-based panels has attracted attention. PVC veneered plywood used in the indoor built environment and relevant VOCs and odor emission under different air exchange rates were studied in this research. Microcell thermal extraction technology was used to sample under the conditions of three different air exchange rates and loading factors: 0.2 m3·h−1·m−2, 0.5 m3·h−1·m−2, and 1.0 m3·h−1·m−2, respectively. Gas Chromatography-Olfactometry-Mass Spectrometry (GC-MS-O) was used to analyze VOCs and their odor release characteristics. The key odor characteristic compounds were analyzed by subjective and objective methods, and the main sources of odor release from the board were analyzed. In this experiment, the time-intensity method is mainly used to analyze the mass concentration of VOCs released from plywood. By comparing the mass concentration and odor intensity of VOCs released from plywood and its components under different air exchange rates and loading factors, the influence of the ratio of air exchange rate to loading factor on plywood is judged. The results show that with three different ratios of air exchange rate to loading factor, the VOCs emission concentration and odor intensity of plywood can be affected greatly and are the highest at 0.2 m3·h−1·m−2. The components released by PVC veneered plywood are mainly aromatic compounds, alkanes and aldehydes. The research findings can guide the indoor built environment design and construction process to control the emission of VOCs by adjusting the air exchange rate, which helps build more healthy and sustainable living environments for humans. Full article
(This article belongs to the Special Issue Recent Advances in Wood Coatings)
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20 pages, 7211 KiB  
Article
Impact of High Concentrations of Cellulose Fibers on the Morphology, Durability and Protective Properties of Wood Paint
by Massimo Calovi and Stefano Rossi
Coatings 2023, 13(4), 721; https://doi.org/10.3390/coatings13040721 - 31 Mar 2023
Cited by 9 | Viewed by 1435
Abstract
This work aims to reveal the effect of a high amount of cellulose fibers on the durability and protective behavior of a bio-based wood paint. The influence of the filler on the morphology of the coatings was investigated by scanning electron microscopy observations, [...] Read more.
This work aims to reveal the effect of a high amount of cellulose fibers on the durability and protective behavior of a bio-based wood paint. The influence of the filler on the morphology of the coatings was investigated by scanning electron microscopy observations, while the durability of the paint was evaluated by exposing the samples to UV-B radiation and continuous thermal shocks. Infrared spectroscopy analysis, colorimetric inspections, adhesion tests and scanning electron microscope observations were employed to assess the role of the high concentrations of fillers in affecting the resilience of the acrylic matrix. Moreover, the impact of the filler on the barrier performance of the coatings was estimated using a liquid resistance test and a water uptake test. Finally, the mechanical properties of hardness and abrasion resistance of the layers were evaluated by means of the Buchholz Hardness Indentation test and the Scrub test. Ultimately, this study demonstrates the pros and cons of using large amounts of cellulose fibers as filler in wood paint: the work warns against the excessive use of these fibers, which need a threshold limit so as not to significantly change the coating’s structure and thereby weaken its protective properties. Full article
(This article belongs to the Special Issue Recent Advances in Wood Coatings)
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