Analytical methodology for sulfonated lignins.

J Sep Sci

Analytical Chemistry Group (HIMS), University of Amsterdam, Amsterdam, The Netherlands.

Published: February 2010

AI Article Synopsis

  • There is a growing need to understand and classify lignins and particularly sulfonated lignins, which have been less studied.
  • Various analytical methods have been designed for different purposes, such as detecting sulfonated lignins in pulp-mill waste or studying their structural changes during processing.
  • The review discusses established and emerging techniques for analyzing sulfonated lignins to predict their behavior in industrial applications.

Article Abstract

There is a significant need to characterize and classify lignins and sulfonated lignins. Lignins have so far received a good deal of attention, whereas this is not true for sulfonated lignins. There is a clear demand for a better understanding of sulfonated lignins on a chemical as well as physical level. Many of the analytical methods have been developed with different goals in mind, for example, detection of sulfonated lignins in pulp-mill effluents, elucidation of structural changes in lignosulfonates during a pulping process, or identification of properties that may affect a formulation when sulfonated lignins are used as a dispersant. When sulfonated lignins are used in industrial applications, analytical data obtained using different techniques may be necessary to enable prediction of their behavior in the target application. In the present review, a critical discussion of established and promising analytical techniques for the characterization of sulfonated lignins is presented.

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http://dx.doi.org/10.1002/jssc.200900691DOI Listing

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