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Table 2 Contents (mmol g−1) and locations of hydroxyl groups in these two lignin nanoparticles as determined by quantitative 31P NMR spectroscopy

From: Lignin valorization: lignin nanoparticles as high-value bio-additive for multifunctional nanocomposites

Sample DLNPs OLNPs
Aliphatic–OH 2.40 1.04
Syringyl–OH 1.31 2.03
Guaiacyl–OH 0.90 1.20
p-hydroxyphenyl–OH 0.23 0.15
Carboxylic–OH 0.18 0.09
Total phenolic–OH 2.44 3.37