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Prehydrolysis Sulfite Revisited
Author(s) -
Fasching Mario,
Griebl Andreas,
Kandioller Gottfried,
Zieher Andrea,
Weber Hedda,
Sixta Herbert
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550516
Subject(s) - sulfite , lignin , chemistry , pulp and paper industry , organic chemistry , extraction (chemistry) , engineering
The prehydrolysis of beech wood in water at different temperatures and the impact of this treatment on further pulping stages were explored. Both, increased condensation degree and an increased number of free phenolic hydroxyl groups were found in the lignin isolated after prehydrolysis. An intermediate alkaline extraction (using either NaOH or MgO as base) following the prehydrolysis was explored. Finally, acid sulfite cooks of the differently pre‐treated materials were performed, and the obtained materials thoroughly analyzed.