Utilization of Lignosulfonate as Dispersants or Surfactants

Lignosulfonate or sulfonated lignin is a water-soluble lignin extracted from the sulfite pulping process. Lignosulfonate is lypohydrophilic molecule due to the hydrophobic aromatic structure and the presence of the hydrophilic sulfonate groups on its structure. This unique structure of lignosulfonate makes it an effective dispersant or surfactant used in a wide range of industries, such as oil well dispersant, coal–water slurry dispersant, dye dispersion, ceramic colloidal processing, and polymer composites.