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Table 5 Water contact angles, Zeta potentials and phenolic group content in lignin samples

From: Effect of alkaline lignin modification on cellulase–lignin interactions and enzymatic saccharification yield

Samples Zeta potential (mV) Contact angle (°) Phenolic group content (mmol/g)
AL 3.5 98.7 1.09
SL − 45.9 29.4 0.56
OL − 21.5 29.5 0.91
CL − 27.3 38.2 0.213