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Highly reinforced and degradable lignocellulose biocomposites by polymerization of new polyester oligomers
RISE Research Institutes of Sweden, Bioekonomi och hälsa. KTH Royal Institute of Technology, Sweden.ORCID-id: 0000-0002-2984-7702
KTH Royal Institute of Technology, Sweden.
RISE Research Institutes of Sweden, Bioekonomi och hälsa.ORCID-id: 0000-0001-7979-9158
KTH Royal Institute of Technology, Sweden.
2022 (engelsk)Inngår i: Nature Communications, E-ISSN 2041-1723, Vol. 13, nr 1, s. 5666-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Unbleached wood fibers and nanofibers are environmentally friendly bio-based candidates for material production, in particular, as reinforcements in polymer matrix biocomposites due to their low density and potential as carbon sink during the materials production phase. However, producing high reinforcement content biocomposites with degradable or chemically recyclable matrices is troublesome. Here, we address this issue with a new concept for facile and scalable in-situ polymerization of polyester matrices based on functionally balanced oligomers in pre-formed lignocellulosic networks. The idea enabled us to create high reinforcement biocomposites with well-dispersed mechanically undamaged fibers or nanocellulose. These degradable biocomposites have much higher mechanical properties than analogs in the literature. Reinforcement geometry (fibers at 30 µm or fibrils at 10-1000 nm diameter) influenced the polymerization and degradation of the polyester matrix. Overall, this work opens up new pathways toward environmentally benign materials in the context of a circular bioeconomy. © 2022. The Author(s).

sted, utgiver, år, opplag, sider
NLM (Medline) , 2022. Vol. 13, nr 1, s. 5666-
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URN: urn:nbn:se:ri:diva-60820DOI: 10.1038/s41467-022-33283-zScopus ID: 2-s2.0-85138909148OAI: oai:DiVA.org:ri-60820DiVA, id: diva2:1703437
Tilgjengelig fra: 2022-10-13 Laget: 2022-10-13 Sist oppdatert: 2023-06-08bibliografisk kontrollert

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Oliaei, ErfanLindström, Tom S. C.

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