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Materials from trees assembled by 3D printing – Wood tissue beyond nature limits
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden, Bioeconomy, Biorefinery and Energy.ORCID iD: 0000-0002-4919-1771
Chalmers University of Technology, Sweden; University of Guadalajara, Mexico.
Chalmers University of Technology, Sweden.
2019 (English)In: Applied Materials Today, ISSN 2352-9407, Vol. 15, p. 280-285Article in journal (Refereed) Published
Abstract [en]

Materials from trees have the potential to replace fossil based and other non-sustainable materials in everyday products, thus transforming the society back to a bioeconomy. This paper presents a 3D printing platform which mimics wood biogenesis for the assembly of wood biopolymers into wood-like hierarchical composites. The genome was substituted with G-code, the programming language which controls how the 3D printer assembles material. The rosette was replaced by the printer head for extrusion of cellulose. Instead of microtubules guiding the alignment of cellulose, the printing direction was guided by an x/y stage, thus mimicking the microfibril angle. The printed structures were locked by an enzymatic crosslinking reaction similar to what occurs in the cell wall upon lignification. Hierarchical structures characteristic for wood were designed and printed with control of density, swelling and directional strength. Accelerating the development of the 3D printing technology helps realize the circular bioeconomy where garments, packaging, furniture and entire houses are manufactured by 3D printing wood.

Place, publisher, year, edition, pages
2019. Vol. 15, p. 280-285
Keywords [en]
3D printing, Biomimetic, Cellulose nanofibrils, Hemicellulose, Honeycomb design, Biomimetics, Biopolymers, Cellulose, Crosslinking, Forestry, Printing presses, Swelling, Wood, 3-D printing, Directional strength, Enzymatic crosslinking, Hierarchical composite, Hierarchical structures, Sustainable materials, 3D printers
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-38141DOI: 10.1016/j.apmt.2019.02.005Scopus ID: 2-s2.0-85062146048OAI: oai:DiVA.org:ri-38141DiVA, id: diva2:1293862
Note

 Funding details: Wallenberg Wood Science Center; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding text 1: The Knut and Alice Wallenberg Foundation is kindly acknowledged for financial support of this research in the framework of the Wallenberg Wood Science Center (WWSC).

Available from: 2019-03-05 Created: 2019-03-05 Last updated: 2019-03-07Bibliographically approved

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Håkansson, Karl

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