Table 2 Hydroxyl contents of original and acetylated lignin determined by 31P NMR.
From: Lignin nanoparticle-enhanced PVA foils for UVB/UVC protection
Aliph-OH | Ph-OHtot | Condensed phenolics | Non-condensed phenolics | |||
|---|---|---|---|---|---|---|
Condensed G-OH | S-OH | Non-condensed G-OH | p-hydroxyl -OH | |||
SKL | 1.83 | 3.64 | 1.47 | / | 2.01 | 0.15 |
SKL-C1 | 0.10 | 0.18 | 0.09 | / | 0.07 | 0.02 |
EKL | 1.47 | 4.24 | 1.16 | 1.96 | 1.02 | 0.09 |
EKL-C1 | 0.14 | 0.23 | 0.08 | 0.08 | 0.06 | 0.01 |
