Decolorization of Lignin for High‐Resolution 3D Printing of High Lignin‐Content Composites
Abstract: Lignin, one of the most abundant biomaterials and a large‐scale industrial waste product, is a promising filler for polymers as it reduces the amount of fossil resources and is readily available. 3D printing is well‐known for producing detailed polymer structures in small sizes at low waste production. Especially light‐assisted 3D printing is a powerful technique for production of high‐resolution structures. However, lignin acts as a very efficient absorber for UV and visible light limiting the printability of lignin composites, reducing its potential as a high‐volume filler. In this work, the decolorization of lignin is presented for high‐resolution 3D printing of biocomposites with lignin content up to 40 wt.%. Organosolv lignin (OSL) is decolorized by an optimized low‐energy process of acetylation and subsequent UV irradiation reducing the UV absorbance by 71%. By integration of decolorized lignin into bio‐based tetrahydrofurfuryl acrylate (THFA), a lignin content of 40 wt.% and a resolution of 250 µm is achieved. Due to the reinforcing properties of lignin, the stiffness and strength of the material is increased by factors of 15 and 2.3, respectively. This work paves the way for the re‐use of a large amount of lignin waste for 3D printing of tough materials at high resolution.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Decolorization of Lignin for High‐Resolution 3D Printing of High Lignin‐Content Composites ; day:13 ; month:08 ; year:2024 ; extent:9
Advanced science ; (13.08.2024) (gesamt 9)
- Creator
- DOI
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10.1002/advs.202406311
- URN
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urn:nbn:de:101:1-2408131422118.495577091609
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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14.08.2025, 10:51 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Böcherer, David
- Montazeri, Ramin
- Li, Yuanyuan
- Tisato, Silvio
- Hambitzer, Leonhard
- Helmer, Dorothea
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Existence and nonexistence of solutions for elliptic problems with multiple critical exponents
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Existence and nonexistence of solutions for elliptic problems with multiple critical exponents
High‐Resolution 3D Printing of Dual‐Curing Thiol‐Ene/Epoxy System for Fabrication of Microfluidic Devices for Bioassays
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Scalable Wire‐Type Asymmetric Pseudocapacitor Achieving High Volumetric Energy/Power Densities and Ultralong Cycling Stability of 100 000 Times
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