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Benchtop NMR measurements on kraft lignin
RISE - Research Institutes of Sweden, Bioeconomy.
RISE - Research Institutes of Sweden, Bioeconomy.ORCID iD: 0000-0003-0779-5267
RISE - Research Institutes of Sweden, Bioeconomy.
Magritek, Germany.
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2017 (English)In: 19th International symposium on wood, fibre and pulping chemistry, August 28 - September 1, 2017, Porto Seguro, Brazil, 2017, p. 434-438Conference paper, Published paper (Refereed)
Abstract [en]

The use of NMR spectroscopy at high magnetic fields is a common tool in the analysis of lignin samples. In the presented study, NMR measurements on a group of softwood and hardwood kraft lignins at low field (1.0 T) with a benchtop NMR spectrometer, containing a permanent magnet, are investigated and evaluated. NMR based diffusion measurements were performed, for which the results were found to be fast, repeatable, and in good agreement numbers to measurements at high field. Measurements were also performed on a sample in alkaline solution, as a model for black liquor analysis, with promising initial results.

Place, publisher, year, edition, pages
2017. p. 434-438
Keywords [en]
nuclear magnetic resonance, lignin, diffusion, spectroscopy
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:ri:diva-33014OAI: oai:DiVA.org:ri-33014DiVA, id: diva2:1172721
Conference
19th International symposium on wood, fibre and pulping chemistry, August 28 - September 1, 2017, Porto Seguro, Brazil
Available from: 2018-01-10 Created: 2018-01-10 Last updated: 2018-07-06Bibliographically approved

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Aldaeus, Fredrik

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