Fig. HSQC Spectrum of Aromatic Region for dynamic dried lignin reference sample 2-1
Fig. HSQC Spectrum of Aliphatic Region for dynamic dried lignin reference sample 2-1
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Aromatic Region:
Significant reduction in G2, G5, and G6 peak intensities indicates extensive structural rearrangements. High temperatures combined with dynamic drying promote condensation reactions and guaiacyl unit degradation.
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Aliphatic Region:
Strong intensity loss in the methoxy (OMe) and β-O-4 peaks reveals substantial cleavage of aliphatic side chains. Oxidative degradation is prominent, suggesting aggressive impacts of higher dynamic drying conditions.