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Fully bio-based cellulose nanofiber/epoxy composites with both sustainable production and selective matrix deconstruction towards infinite fiber recycling systems
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Träkemi och massateknologi. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Biokompositer. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.ORCID-id: 0000-0001-6017-1774
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Biokompositer. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.ORCID-id: 0000-0002-5081-1835
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Biokompositer. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.ORCID-id: 0000-0001-5818-2378
2022 (engelsk)Inngår i: Journal of Materials Chemistry A, ISSN 2050-7488, E-ISSN 2050-7496, Vol. 10, nr 2, s. 570-576Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Design of nanocellulose-based composite materials suitable for selective disintegration, recovery and recycling of individual components is of great scientific and technical interest. Cellulose nanofiber/epoxy (CNF/EP) composites are candidate bio-based substitutes for petroleum-based materials. However, chemical recovery of such intimately mixed nanocomposites has not been addressed, due to the limited chemical stability of nanocellulose and due to the covalently crosslinked epoxy network. In this work we develop CNF/EP composites designed for selective disintegration. Deconstruction is achieved by including two types of labile linkages to the polymer network; acetals and esters. Besides enabling recycling of the CNF reinforcement, the thermoset constituents were further depolymerized into valuable monomeric units in 63-95% yield. In addition, the preparation of both; epoxy monomers and final composite materials is performed using solely bio-derived materials and solvents. 

sted, utgiver, år, opplag, sider
Royal Society of Chemistry (RSC) , 2022. Vol. 10, nr 2, s. 570-576
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URN: urn:nbn:se:kth:diva-307458DOI: 10.1039/d1ta07758aISI: 000730767800001Scopus ID: 2-s2.0-85122883299OAI: oai:DiVA.org:kth-307458DiVA, id: diva2:1632130
Forskningsfinansiär
Knut and Alice Wallenberg Foundation, Biocomposites Program
Merknad

QC 20220204

Tilgjengelig fra: 2022-01-26 Laget: 2022-01-26 Sist oppdatert: 2024-08-02bibliografisk kontrollert

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Subbotina, ElenaMontanari, CelineOlsén, PeterBerglund, Lars

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