Biorefinery of paulownia by autohydrolysis and soda-anthraquinone delignification process. Characterization and application of lignin

摘要

BACKGROUNDLignin is one of the most abundant polymers in nature. Its physical and chemical properties confer it a high potential for various uses including the production of thermoplastic matrices. This work characterized various types of lignin obtained by alkaline delignification of paulownia with soda-anthraquinone. The delignification process was carried out with or without previous autohydrolysis. The products obtained after evaporation or acidification were used to produce polylactic acid-lignin composites.