Lignin Polyurethane Aerogels: Influence of Solvent on Textural Properties
Author Information
Author(s): Altarabeen Razan, Rusakov Dmitri, Manke Erik, Gibowsky Lara, Schroeter Baldur, Liebner Falk, Smirnova Irina
Primary Institution: Institute for Thermal Separation Processes, Hamburg University of Technology
Hypothesis
How do different types of lignin and solvent choices affect the microstructural properties of lignin-based polyurethane aerogels?
Conclusion
The study demonstrates that varying the solvent composition can significantly tailor the textural and mechanical properties of lignin polyurethane aerogels.
Supporting Evidence
- Organosolv lignin was identified as the optimal candidate for producing polyurethane aerogels.
- Using DMSO as a solvent resulted in faster gelation and denser materials.
- Solvent mixtures improved the mechanical stability and mesoporosity of the aerogels.
Takeaway
This study shows that by changing the type of solvent used, we can make stronger and better aerogels from lignin, which is a natural material.
Methodology
The study involved synthesizing lignin polyurethane aerogels using different types of lignin and solvent mixtures, followed by evaluating their textural and mechanical properties.
Limitations
The study primarily focuses on three types of lignin and may not cover all possible variations in lignin sources and processing methods.
Digital Object Identifier (DOI)
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