Function of Lignin products

Lignin products have three functions as dispersing,binding and chelating. Dispersing: Lignosulfonate is a high weight electrolyte containing sulfonate, carboxyl and phenol hydroxyl groups. It is absorbent to organic and inorganic particles chemically or physically, and keeps them dispersing stably since the strong hydrophilic property and the negative charges. Binding: Lignosulfonate has binding property since it is a high polymer. It has excellent binding property since it contains not only lignosulfonate but also reducing sugar and sugar sulfonate.   Chelating: Lignosulfonate and sugar derivative has chelating property making hydrophilic or hydrophobic compounds since they contain sulfonate, carboxyl and phenol or alcohol hydroxyl groups and they are absorbent to polyvalent metal ions.