Defibration mechanisms of autohydrolyzed Eucalyptus wood chips
| Autor: | Kyösti Ruuttunen, Anna-Stiina Jääskeläinen, Jorge Luiz Colodette, Tapani Vuorinen, Marcelo Coelho dos Santos Muguet |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Polymers and Plastics engineering.material complex mixtures chemistry.chemical_compound energy consumption XPS Lignin Hemicellulose SDG 7 - Affordable and Clean Energy Composite material autohydrolysis Middle lamella defibration Pulp (paper) technology industry and agriculture TMP Biorefinery Eucalyptus pulp properties eucalyptus FTIR chemistry engineering |
| Zdroj: | dos Santos Muguet, M C, Ruuttunen, K, Jääskeläinen, A-S, Colodette, J L & Vuorinen, T 2013, ' Defibration mechanisms of autohydrolyzed Eucalyptus wood chips ', Cellulose, vol. 20, no. 5, pp. 2647-2654 . https://doi.org/10.1007/s10570-013-0023-3 |
| ISSN: | 1572-882X 0969-0239 |
| DOI: | 10.1007/s10570-013-0023-3 |
| Popis: | The objective of this study was to evaluate the influence of autohydrolysis on mechanical defibration of Eucalyptus wood chips. The autohydrolysis process changed notably the mechanical properties of Eucalyptus chips. The removal of mainly hemicelluloses undoubtedly decreased the overall pulp yield. Hemicellulose losses cannot be solely accounted for the changes in the wood and pulp properties, because the autohydrolysis also caused changes in lignin. When comparing the mechanical pulp fibers of the original wood chips with the fibers resulting from the autohydrolyzed wood material, it was clear that the rupture point shifted from the secondary wall to the middle lamella, confirmed by X-ray photoelectron spectroscopy measurements. This study revealed the mechanical behavior of autohydrolyzed wood chips and can provide useful information for integration of mechanical pulp mills into the biorefinery concept in the future. |
| Databáze: | OpenAIRE |
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