Structural and Thermal Characterization of Novel Organosolv Lignins from Wood and Herbaceous Sources
Trubetskaya, Anna; Lange, Heiko; Wittgens, Bernd; Brunsvik, Anders; Crestini, Claudia; Rova, Ulrika; Christakopoulos, Paul; Leahy, J.J.; Matsakas, Leonidas
Peer reviewed, Journal article
Published version

View/ Open
Date
2020Metadata
Show full item recordCollections
- Publikasjoner fra CRIStin - SINTEF AS [6166]
- SINTEF Industri [1732]
Original version
10.3390/pr8070860Abstract
This study demonstrates the effects of structural variations of lignins isolated via an organosolv process from different woody and herbaceous feedstocks on their thermal stability profiles. The organosolv lignins were first analysed for impurities, and structural features were determined using the default set of gel permeation chromatography, FT-IR spectroscopy, quantitative 31 P NMR spectroscopy and semi-quantitative 1 H- 13 C HSQC analysis. Pyrolysis-, O 2 - and CO 2 -reactivity of the organosolv lignins were investigated by thermogravimetric analysis (TGA), and volatile formation in various heating cycles was mapped by head-space GC-MS analysis. Revealed reactivities were correlated to the presence of identified impurities and structural features typical for the organosolv lignins. Data suggest that thermogravimetric analysis can eventually be used to delineate a lignin character when basic information regarding its isolation method is available.