Table 1.
Analysis Type | Lignin Raw Material |
---|---|
Neat FTIR-ATR | Acetylated lignin |
FTIR-ATR on lignin in DMSO-d6 | Acetylated lignin |
Transmission FTIR in KBr | Acetylated lignin |
Non-aqueous potentiometric titration | Unmodified lignin |
Amount of acetic acid consumed (total OH) | Reaction solvent after acetic anhydride hydrolysis, buffering, and removal of lignin via filtration |
Size exclusion chromatography (SEC) | Unmodified lignin |