Interaction of silver halides with gelatin of like charge

Interaction of nonionic dextrans with silver bromide hydrosols

“…Alternately, the sensitization of silver bromide sols by gelatin of the same sign of charge was explained to be a coagulation process by simple counterions (22). The lower critical coagulation concentration was assumed to be caused by reduction of the surface charge density of colloidal particles by the adsorbing macromolecules.…”

Interaction of dextran sulfates with positively and negatively charged silver bromide hydrosols

“…The literature dealing with the interactions of colloids and polyelectrolytes of the same sign of charge has been reviewed elsewhere (1,9). The mechanisms proposed involve particle bridging (10--13), particle charge reduction (9), and complex formation (14).…”

Flocculation of negatively charged colloids by inorganic cations and anionic polyelectrolytes

“…Flocculation does not occur in the absence of appropriate cations. Flocculating AgBr/Br-with gelatin, Nemeth and Matijevic (1968) found that the concentration of simple electrolytes required to cause flocculation followed the Schulze-Hardy rule regarding the valence of the electrolyte. They concluded that the polyelectrolyte functioned by adsorbing onto the surface of the AgBr/Br-and reduced the surface potential.…”