EFFECT OF DEXTRAN-graft-POLYACRYLAMIDE INTERNAL STRUCTURE ON FLOCCULATION PROCESS PARAMETERS

Dextran‐graft‐Polyacrylamide copolymers (D‐g‐PAA) of brush‐like architecture were tested as flocculation aids in the model kaolin suspensions. Due to expanded conformation the D‐g‐PAA copolymers are more effective flocculants than individual PAA with close molecular mass. The internal structure of D‐g‐PAA copolymers which is determined by number and length of grafted PAA chains, the distance between grafts, etc., has the significant influence on flocculation behavior of such polymers.