Abstract
Thermo-mechanical (TMP) and chemo-thermo-mechanical pulping (CTMP) of UF-bonded MDF induce considerable degradation of the UF-resin in the board and lead to a conspicuous increase in the content of water extractives of the fibres. Moreover, the water extractives of the fibres have a higher pH-value and a lower buffering capacity as well as higher acetate and formate ions content than the extractives of the original board. However, the lignin content seems rather to increase than to decrease. This is possibly due to reaction between lignin and formaldehyde from the resin.
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Literatur
Franke R, Roffael E (1998) Zum Recycling von Span- und MDF-Platten. Teil 2: Einfluss der thermischen Behandlung von zerkleinerten UF-gebundenen Span- und MDF-Platten sowie Kiefernspänen auf die Formaldehyd- und Ammoniakabgabe. Holz Roh- Werkst 56:381–385
Sastry GP (1969) The reaction of formaldehyde with spruce lignin. Holzforschung 23:15–17
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Open Access This is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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Roffael, E., Dix, B., Behn, C. et al. Abbau von UF-Harzen beim TMP- und CTMP-Aufschluss von mitteldichten Faserplatten (MDF) . Eur. J. Wood Prod. 67, 361–362 (2009). https://doi.org/10.1007/s00107-008-0280-2
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DOI: https://doi.org/10.1007/s00107-008-0280-2