Journal article
Aldehyde-Assisted Lignocellulose Fractionation Provides Unique Lignin Oligomers for the Design of Tunable Polyurethane Bioresins.
- Vendamme R Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Behaghel de Bueren J Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland.
- Gracia-Vitoria J Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Isnard F Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Mulunda MM Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Ortiz P Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Wadekar M Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Vanbroekhoven K Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- Wegmann C Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland.
- Buser R Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland.
- Héroguel F Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland.
- Luterbacher JS Laboratory of Sustainable and Catalytic Processing, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland.
- Eevers W Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, 2400 Mol, Belgium.
- 2020-08-27
Published in:
- Biomacromolecules. - 2020
English
Thanks to chemical stabilization, aldehyde-assisted fractionation (AAF) of lignocellulosic biomass has recently emerged as a powerful tool for the production of largely uncondensed lignin. Depolymerization of AAF lignin via ether cleavage provides aromatic monomers at near theoretical yields based on ether cleavage and an oligomeric fraction that remains largely unexploited despite its unique material properties. Here, we present an in-depth analytical characterization of AAF oligomers derived from hardwood and softwood in order to elucidate their molecular structures. These bioaromatic oligomers surpass technical Kraft lignin in terms of purity, solubility, and functionality and thus cannot even be compared to this common feedstock directly for material production. Instead, we performed comparative experiments with Kraft oligomers of similar molecular weight (Mn ∼ 1000) obtained through solvent extraction. These oligomers were then formulated into polyurethane materials. Substantial differences in material properties were observed depending on the amount of lignin, the botanical origin, and the biorefining process (AAF vs Kraft), suggesting new design principles for lignin-derived biopolymers with tailored properties. These results highlight the surprising versatility of AAF oligomers towards the design of new biomaterials and further demonstrate that AAF can enable the conversion of all biomass fractions into value-added products.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1021/acs.biomac.0c00927
- PMID 32845140
- Persistent URL
- https://folia.unifr.ch/global/documents/214877
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