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1H and 13C NMR data of benzylsulfonic acids—model compounds for lignosulfonate

✍ Scribed by Bjart F. Lutnaes; Bernt O. Myrvold; Rolf A. Lauten; Molla M. Endeshaw

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
256 KB
Volume
46
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Although there has been a major progress in the analysis of native lignin using NMR in the recent years, not much attention has been paid to lignosulfonates. Lignosulfonates are more difficult to analyse because of solubility issues and a more complex structure owing to chemical modification during the pulping process. A large database of NMR data is available for the building blocks of native lignin, but no data are available for the corresponding sulfonated compounds. We have prepared 15 monomeric and seven dimeric sulfonated model compounds characterised by NMR. These include models for end groups, as well as β‐β, β‐5, 5‐5 and β‐O‐5 linkages in lignosulfonates, and will be important for further structural investigation on lignosulfonate. Copyright © 2008 John Wiley & Sons, Ltd.

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