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Towards a Sustainable and Recyclable Future with Wood and Wood-Based Composites

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: 20 May 2024 | Viewed by 2665

Special Issue Editors

Dr. Klementina Pušnik Črešnar

E-Mail Website
Guest Editor
Assist. Prof. dr. Klementina Pušnik Črešnar, Faculty of Polymer Technology, Ozare 19, SI-2380 Slovenj Gradec, Slovenija
Interests: polymer (nano)composites; structural properties; thermal properties; surface properties of polymer composites
Dr. Olivija Plohl

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia
Interests: polysaccharide-based magnetic nanocomposites; active biopolymers with an-tiviral and antimicrobial properties; encapsulated polymeric mi-cro/nanoparticles; derivatization of polysaccharides with target functionality; engineering and biomedical applications of polysaccharides; development of antiviral personal protective equipment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The vision of the Plastic Europe strategy and the European Green Deal efforts is based on a sustainable, low-carbon, resource-efficient and competitive economy that fully respects reuse, recycling and durability. This is a challenge where polymer–wood-fibre-reinforced composites offer significant opportunities to exploit raw material resources and produce high-added-value material composites that provide a societal solution, saving resources and emissions and ultimately making the polymer composite material as attractive and best qualified as a neat polymer.

Although existing polymer wood composites are commercially successful, material development has not focused on controlling the (nano) structure of polymer composites to extend the range of their properties. There is a need to tune the structural changes in the properties of wood–polymer composites (molecular weight, Mw, chain scission, crystal structure, (trans) crystallisation behaviour) that cause changes in thermal properties (melting temperature, crystallisation) as well as rheological, mechanical, and surface behaviour; adding new functionalities also provides motivation for future tailoring.

Focusing on multifunctional properties in a wide range of applications such as automotive, aerospace, packaging, construction and transportation, the Special Issue, entitled Towards a Sustainable and Recyclable Future with Wood and Wood-based Composites, will present the latest developments in polymer wood-based composites.

Therefore, it is my pleasure to invite you to submit your work for this Special Issue. Research papers, reviews and communications are welcome.

Dr. Klementina Pušnik Črešnar
Dr. Olivija Plohl
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. Materials 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 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

  • sustainability
  • recyclability
  • polymer wood composites
  • structural properties
  • thermal properties
  • rheological properties
  • mechanical properties
  • surface properties

Published Papers (3 papers)

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Research

24 pages, 18164 KiB  
Article
Moisture Effects on Acoustic Emission Characteristics and Damage Mechanisms of Balsa Wood Core Composite Sandwich under 4-Point Bending
by Yuan Wu, Marianne Perrin, Marie-Laetitia Pastor, Pascal Casari and Xiaojing Gong
Materials 2024, 17(5), 1044; https://doi.org/10.3390/ma17051044 - 24 Feb 2024
Viewed by 487
Abstract
To contribute to the development of sustainable composites, this work investigates the effects of moisture on the key AE characteristics related to the damage mechanisms of a bio-based balsa wood core sandwich in 4-point bending tests, including cumulative counts, amplitude, peak frequency, and [...] Read more.
To contribute to the development of sustainable composites, this work investigates the effects of moisture on the key AE characteristics related to the damage mechanisms of a bio-based balsa wood core sandwich in 4-point bending tests, including cumulative counts, amplitude, peak frequency, and duration. Novel triple dog-bone balsa wood core sandwich specimens with different MC (moisture content) were studied by comparing microscopic observations and a proposed two-step clustering approach in AE analysis. Three MC states, i.e., dry, 50% MC, and 120% MC, are discussed. GFRP (glass-fiber-reinforced polymer) laminate skin damages were found to be predominant in most GFRP–balsa sandwich specimens, but balsa wood core damages play a more important role as MC increases. The degradation of the bending stiffness of the sandwich was proven to be faster in the first linear stage of the moisture absorption curve, while the decrease in bending strength was more pronounced at the MC saturation level. Finally, for all of the dry and wet sandwich specimens, peak frequency and duration were proven to be more helpful in identifying damages associated with the lighter bio-based balsa wood core, such as balsa core damages and skin/core debonding. Full article
(This article belongs to the Special Issue Towards a Sustainable and Recyclable Future with Wood and Wood-Based Composites)
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19 pages, 2944 KiB  
Article
Particleboards with Recycled Material from Hemp-Based Panels
by Electra Papadopoulou, Iouliana Chrysafi, Konstantina Karidi, Andromachi Mitani and Dimitrios N. Bikiaris
Materials 2024, 17(1), 139; https://doi.org/10.3390/ma17010139 - 27 Dec 2023
Cited by 1 | Viewed by 1069
Abstract
This research addresses the current need for sustainable solutions in the construction and furniture industries, with a focus on environmentally friendly particleboard. Particleboards were made from a mixture of virgin wood chips and hemp shives, which were then mechanically recycled and used to [...] Read more.
This research addresses the current need for sustainable solutions in the construction and furniture industries, with a focus on environmentally friendly particleboard. Particleboards were made from a mixture of virgin wood chips and hemp shives, which were then mechanically recycled and used to make new lightweight particleboards. Phenol–formaldehyde resin with 25% w/w phenol replacement by soybean flour (PFS) was used as the binder for the lignocellulosic materials. Laboratory analyses determined the resin properties, and FTIR confirmed the structure of the experimental PFS resin. The thermal properties of all the resins were evaluated using thermogravimetric analysis (TGA). The panels were manufactured using industrial simulation and tested for mechanical and physical properties in accordance with European standards. The FTIR study confirmed good adhesion, and the TGA showed improved thermal stability for the recycled biomass panels compared to virgin biomass panels. The study concludes that lightweight particleboards can be successfully produced from recycled hemp shive-based panels, providing a sustainable alternative to traditional materials in the construction industry. Full article
(This article belongs to the Special Issue Towards a Sustainable and Recyclable Future with Wood and Wood-Based Composites)
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19 pages, 7507 KiB  
Article
Evaluation of the Surface Irregularities of the Cross-Section of the Wood after CO2 Laser Cutting
by Lukáš Adamčík, Rastislav Igaz, Lukáš Štefančin, Ivan Kubovský and Richard Kminiak
Materials 2023, 16(22), 7175; https://doi.org/10.3390/ma16227175 - 15 Nov 2023
Viewed by 727
Abstract
The present paper deals with the analysis of cross-section surface irregularities after CO2 laser cutting. The surface irregularities of beech (Fagus sylvatica L.), oak (Quercus petraea), and spruce (Picea abies L.) wood were quantified by primary profile parameters [...] Read more.
The present paper deals with the analysis of cross-section surface irregularities after CO2 laser cutting. The surface irregularities of beech (Fagus sylvatica L.), oak (Quercus petraea), and spruce (Picea abies L.) wood were quantified by primary profile parameters using a digital microscope. The arithmetic mean height (Pa), used as the basic parameter, was supplemented by amplitude parameters (Pv, Pp, Pz) and the Psm parameter, through which the shape of the irregularity was specified in more detail. A statistically significant change was demonstrated when changing the values of the feed speed and the power of the CO2 laser. The results of this article confirm that the surface irregularities increased with an increasing laser power and decreasing feed rate. The scanned topographic images also provide a more detailed explanation of the measured P-parameters and point out the risks associated with the evaluation of the cross-section with the primary profile. Full article
(This article belongs to the Special Issue Towards a Sustainable and Recyclable Future with Wood and Wood-Based Composites)
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