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Gewählte Publikation:

Zinovyev, G; Sumerskii, I; Korntner, P; Sulaeva, I; Rosenau, T; Potthast, A.
(2017): Molar mass-dependent profiles of functional groups and carbohydrates in kraft lignin
J WOOD CHEM TECHNOL. 2017; 37(3): 171-183. FullText FullText_BOKU

Abstract:
Technical lignins are complex, irregular, polyphenolic compounds obtained in large quantities as by-products of the pulp and paper industries or according to current biorefinery setups. The availability of kraft lignin is increasing due to larger scale retrieval from process liquors, which opens new possibilities for further refining or new applications of such lignins. In the present study, sequential ultrafiltration of kraft lignin was performed to fractionate the lignin and to elucidate molar mass-dependent changes in lignin structure. Two industrial black liquors and three precipitated lignins were fractionated, and their functional groups were determined, providing molar mass-dependent profiles. Interrelations between structural parameters and functional groups, the molecular weight ranges, and the different lignin sources are discussed. This will help to establish structure-property-application relationships (SPARs) for technical lignins which are required for any future large-scale application.
Autor/innen der BOKU Wien:
Korntner Philipp
Potthast Antje
Rosenau Thomas
Sulaeva Irina
Sumerskii Ivan
Zinovyev Grigory
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Kraft lignin
technical lignins
fractionation
molar mass distribution
functional groups


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