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Cationic starch and anionic sodium polyacrylate (NaPA) were in this work used for flocculation of semi-dilute calcium carbonate dispersions. The polyelectrolytes were added pre-mixed or sequentially to the predominantly cationic calcium carbonate. When used alone, neither of the polyelectrolytes was able to cause a considerable flocculation of the calcium carbonate dispersions. However, when used...
Mixtures of high molecular mass cationic starch and low molecular mass anionic sodium polyacrylate were characterized (isothermal titration calorimetry, turbidity, polyelectrolyte titration, viscosity, and electrophoretic mobility) and used for controlled flocculation of semi-dilute calcium carbonate dispersions. The polyelectrolytes were mixed at ratios ranging from pure sodium polyacrylate to pure...
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