Journal
HOLZFORSCHUNG
Volume 71, Issue 7-8, Pages 563-570Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/hf-2016-0182
Keywords
diffusion; diffusion ordered spectroscopy (DOSY); HSQC; lignin fractionation; MALDI-TOF MS; molar mass; nuclear magnetic resonance (NMR); pulsed field gradient NMR (PFG-NMR); size exclusion chromatography (SEC); softwood kraft lignin
Categories
Funding
- RISE Research Institutes of Sweden
- Altri
- Ence
- Fibria
- Holmen
- Mercer
- Metsa Board
- Metsa Fibre
- SCA
- Stora Enso
- Sodra
- Valmet
Ask authors/readers for more resources
The general molecular properties and in particular, the molar mass of lignin are of central importance for industrial applications, as these data govern important thermal and mechanical characteristics. The focus of the present paper is pulsed field gradient-nuclear magnetic resonance (PFG-NMR), which is suitable for determination of lignins' weight-average molar mass, based on diffusion constants. The method is calibrated by lignin fractions characterized by matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS). It could be demonstrated on a set of softwood kraft lignins that the PFG-NMR approach gives results in very good agreement with those obtained using conventional size exclusion chromatography (SEC).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available