idw – Informationsdienst Wissenschaft
Nachrichten, Termine, Experten
Nachrichten, Termine, Experten
idw - Informationsdienst
Wissenschaft
An interdisciplinary team of researchers from the Max Planck Institute of Colloids and Interfaces (MPICI) has investigated how the natural properties of native tree bark can be used to create a standardized product for long-term use without the addition of adhesives. In doing so, they have created bark panels by peeling and drying via hot pressing, which could be used in interior design or furniture and packaging, for example, through industrial production.
With this processing method, the natural resource of tree bark could be further processed without the addition of artificial binders, such as adhesives, and without high energy expenditure. "A major advantage of 'pure' single-component products is that there is no need to separate the components after they have been used," says Dr. Charlett Wenig, first author of the study. She adds, "Even if the structure of the raw material is changed, the basic building blocks remain the same and can therefore still be readily used for further processing, such as obtaining chemicals or fibers, or as fuel for energy production."
As a waste product of the timber industry, tree bark is available in large quantities. First, the bark must be peeled from the trunk and then dried. In the experiments, the scientists pressed the insides of the barks with a hydraulic press at 90 degrees Celsius. They used bark from the native tree species pine, larch, birch and oak. After pressing, all the bark panels produced in this way had a smooth surface comparable to sanded wood surfaces. The mechanical properties of the boards are comparable to those of a shelf board.
What is new? Previously, pure bark particle boards were made with the addition of formaldehyde-based adhesives or resins. As early as 1960, studies showed that it was possible to produce adhesive-free bark boards, but by using shredded bark pieces and by heavy processing. In the MPICI trials, researchers are taking advantage of the natural structural properties of the barks.
Partners: Eberswalde University of Applied Sciences (Department of Forest Utilization and Wood Market) and ETH Zurich (Wood Materials Science).
Adhesives free bark panels: An alternative application for a waste material: https://doi.org/10.1371/journal.pone.0280721
https://www.mpikg.mpg.de/6787494/news_publication_19815874_transferred?c=132305 (Link to press release)
https://www.mpikg.mpg.de/en/plant-material-adaptation (Link to group page)
Manufacture of curved bark elements
Dr. Charlett Wenig
© cc-by 4.0 PLOS ONE
Pressed bark panel
Dr. Charlett Wenig
Max-Planck-Institut für Kolloid- und Grenzflächenforschung/Dr. Charett Wenig
Merkmale dieser Pressemitteilung:
Journalisten, Lehrer/Schüler, Studierende, Wirtschaftsvertreter, Wissenschaftler, jedermann
Kunst / Design, Werkstoffwissenschaften
überregional
Forschungsergebnisse, Wissenschaftliche Publikationen
Englisch
Sie können Suchbegriffe mit und, oder und / oder nicht verknüpfen, z. B. Philo nicht logie.
Verknüpfungen können Sie mit Klammern voneinander trennen, z. B. (Philo nicht logie) oder (Psycho und logie).
Zusammenhängende Worte werden als Wortgruppe gesucht, wenn Sie sie in Anführungsstriche setzen, z. B. „Bundesrepublik Deutschland“.
Die Erweiterte Suche können Sie auch nutzen, ohne Suchbegriffe einzugeben. Sie orientiert sich dann an den Kriterien, die Sie ausgewählt haben (z. B. nach dem Land oder dem Sachgebiet).
Haben Sie in einer Kategorie kein Kriterium ausgewählt, wird die gesamte Kategorie durchsucht (z.B. alle Sachgebiete oder alle Länder).
