Lignin-based Foams: Production Process and Characterization
| Autor: | Charlie Van Doorslaer, Christian Kolbitsch, Gianluca Tondi, Richard Herchl, Paul Luckeneder, Martin Link, Johannes Gavino, Alexander Petutschnigg |
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| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Materials science lcsh:Biotechnology Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis Lignin valorization chemistry.chemical_compound Sustainable material Blowing agent lcsh:TP248.13-248.65 Copolymer Tannin Lignin Leachate Composite material Natural foam Waste Management and Disposal Insulation material Renewable resource chemistry.chemical_classification 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering Leaching (metallurgy) 0210 nano-technology |
| Zdroj: | BioResources, Vol 11, Iss 2, Pp 2972-2986 (2016) |
| ISSN: | 1930-2126 |
| DOI: | 10.15376/biores.11.2.2972-2986 |
| Popis: | Lignin foams are innovative materials obtained by the copolymerization of furanics with the spent liquor from the magnefite wood pulping process. In this study, the influence of the component amount in the formulation, as well as the effect of temperature on the final product, were elucidated. Several formulations, with various lignin/furanic ratios, blowing agents, and catalyst concentrations, exhibited good homogeneity and densities between 185 and 407 kg m-3. The mechanical properties, as well as the thermal conductivities, confirmed the strong dependence on density, and the results obtained were comparable to that of tannin foams. The leaching tests revealed that the lignin foams released a certain amount of catalyst within the first minutes of water dipping. However the pH of this leachate stabilized quickly, which suggests that the catalyst can be easily recovered. |
| Databáze: | OpenAIRE |
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