Novel and Integrated Process for the Valorization of Kraft Lignin to Produce Lignin-Containing Vitrimers.

ABSTRACT: The valorization of lignin into value-added products by oxidative conversion is a widely studied strategy. However, in many cases, this approach has limited scope for integration into industrial processes. The objective of our work is to maximize overall lignin utilization to produce diverse value-added products with a focus on integration in the existing industrial pulp and paper processes. The utilization of the sequential oxidation strategy using oxygen and ozone resulted in kraft lignin with a marked improvement in carboxyl content and also allowed the formation of vanillin and vanillic acid in the oxygen stage. The sequentially oxidized lignin (OxL-COOH) was then cured with poly(ethylene glycol) diglycidyl ether (PEG-epoxy) to form high-lignin-content (>48 wt %) vitrimers with high th

SUBMITTER: More A 

PROVIDER: S-EPMC9835646 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature