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Different aggregations processes during kraft lignin aggregation.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.ORCID iD: 0000-0003-3407-7973
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
2004 (English)In: Eighth European Workshop on lignocellulosics and pulp : utilization of lignocellulosics and by-products of pulping ; August 22-25,2004 ; proceedings.: Workshop on Lignocellulosics and Pulp (EWLP) ; 8 (Riga) : 2004.08.22-25, Riga: Institute of Wood Chemistry , 2004, 562- p.Conference paper, (Refereed)
Abstract [en]

This study is focused on the aggregation behaviour of kraft lignin (KL) in presence of different types of surfactants at elevated temperatures. Especially the initial part of the aggregation process, the nucleation and onset, is of interest. KL aggregation is induced either by adding surfactants or salt. The KL-surfactant interactions are found to be different depending on the type of surfactant. Starting with KL as a negatively charged polymeric fragment and adding a positively charged surfactant, the aggregation behaviour is significantly influenced. However, adding non-ionic surfactants without obvious head group interactions to the KL solutions, or surfactants with negatively charged head groups, completely different aggregation processes and particle structures are observed.

Place, publisher, year, edition, pages
Riga: Institute of Wood Chemistry , 2004. 562- p.
Keyword [en]
kraft lignin, precipitation, aggregation, particle stucture
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-2605Local ID: 1957ISBN: 9984-19-611-9 (print)OAI: oai:DiVA.org:miun-2605DiVA: diva2:27637
Available from: 2008-09-30 Created: 2008-09-30Bibliographically approved

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