Depolymerisation of kraft lignin to obtain high value-added products: antioxidants and UV absorbers

Abstract: This study demonstrates that bio-based products of lignin depolymerisation can potentially replace common antioxidants and UV absorbers in the plastics and cosmetics industries. The kraft lignin Indulin AT was used to obtain low-MW lignin and monomers & oligomers rich in phenolic hydroxyl groups. Both thermo-oxidative stability and antioxidant activity significantly improved upon lignin depolymerisation. The results from oxidation induction time differential scanning calorimetry (OIT-DSC) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) measurements show that the lignin based depolymerisation products are comparable with commercial antioxidants like pentaerythritol-tetrakis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate) (Irganox 1010). UV/vis spectroscopy was investigated to confirm absorption of the depolymerisation products in the UVA and UVB range (280–400 nm).

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Depolymerisation of kraft lignin to obtain high value-added products: antioxidants and UV absorbers ; volume:76 ; number:9 ; year:2022 ; pages:845-852 ; extent:08 ; Holzforschung ; 76, Heft 9 (2022), 845-852 (gesamt 08)

Contributors, Places and Time

• Creator: Aufischer, Gottfried ; Süss, Raphaela ; Kamm, Birgit ; Paulik, Christian

Further information

• DOI: 10.1515/hf-2022-0023
• URN: urn:nbn:de:101:1-2022082514042899921977
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:28 AM CEST