Open this publication in new window or tab >>Show others...
2020 (English)In: Processes, ISSN 2227-9717, Vol. 8, no 7, article id 860Article in journal (Refereed) Published
Abstract [en]
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 P-31 NMR spectroscopy and semi-quantitative H-1-C-13 HSQC analysis. Pyrolysis-, O-2- and CO2-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.
Place, publisher, year, edition, pages
MDPI, 2020
Keywords
lignin, organosolv fractionation, TGA, P-31 NMR, HSQC, heat treatment
National Category
Bioprocess Technology
Research subject
Biochemical Process Engineering
Identifiers
urn:nbn:se:ltu:diva-80510 (URN)10.3390/pr8070860 (DOI)000554290600001 ()2-s2.0-85089595481 (Scopus ID)
Note
Validerad;2020;Nivå 2;2020-08-20 (johcin)
2020-08-202020-08-202023-09-05Bibliographically approved