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Updated: Mar 30, 2026
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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
Published on: August 10, 2016
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High-Strength Composite Fibers from Cellulose-Lignin Blends Regenerated from Ionic Liquid Solution
Yibo Ma1, Shirin Asaadi1, Leena-Sisko Johansson2
1Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, 00076, Aalto, Finland.
Chemsuschem
|November 7, 2015
Summary
New composite fibers blending cellulose and lignin were successfully created using ionic liquid solutions. These durable fibers show potential for textile applications and as precursors for carbon fiber production.
Area of Science:
- Materials Science
- Polymer Chemistry
- Textile Engineering
Background:
- Cellulose and lignin are abundant biopolymers with potential for creating advanced materials.
- Ionic liquids offer unique solvent properties for processing biomass components.
- Developing sustainable composite fibers is crucial for reducing environmental impact and resource dependency.
Purpose of the Study:
- To produce and characterize composite fibers from cellulose and lignin using ionic liquid solutions.
- To investigate the effect of varying lignin content on fiber properties.
- To evaluate the potential of these composite fibers for textile and carbon fiber applications.
Main Methods:
- Dry-jet wet spinning of composite fiber dope prepared from eucalyptus dissolving pulp and lignin blends in 1,5-diazabicyclo[4.3.0]non-5-enium acetate ionic liquid.
- Mechanical testing to assess fiber strength.
- Scanning Electron Microscopy (SEM) for morphological analysis.
- Vapor adsorption analysis.
- Thermogravimetric analysis (TGA) for carbonization yield assessment.
Main Results:
- Successfully spun composite fibers with high strength, showing a slight decrease with increased lignin content due to reduced crystallinity.
- Observed morphological changes and altered total orientation in fibers with varying lignin ratios.
- Lignin's hydrophobic nature decreased vapor adsorption within the fibers.
- Thermogravimetric analysis indicated a positive influence of lignin on carbonization yield.
Conclusions:
- Composite fibers from cellulose and lignin can be successfully produced via ionic liquid processing.
- Fiber properties, including strength and morphology, are influenced by lignin content.
- These composite fibers are promising for textile manufacturing and as precursors for carbon fiber production.
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