ArticleBiomacromolecules2026
Understanding Lignin Radical Dynamics: Quenching Radicals by Solvent and Thermal Induced Mobility.
Article in Biomacromolecules, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Lignin contains persistent free radicals (PFRs) stabilized by restricted molecular mobility in a glassy state. Herein, we investigate quenching effects in softwood kraft lignin PFRs by solvation and thermal treatment. Electron paramagnetic resonance (EPR) spectroscopy and temperature-modulated differential scanning calorimetry (TM-DSC) were used to characterize changes. Room-temperature methanol or acetone swelling reduced the paramagnetic signal to 48% and 71% of the original intensity. Similarly, heating lignin above its glass transition temperature (
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