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Polyacrylamides. Polyacrylamides (PAMs) are relatively inexpensive polymers that are easily formulated to high molecular weights on the order of several million g/mol. PAM was first used in the paper industry in the mid-1950s. Anionic PAM
The flocculation of negatively charged fine particles by high molecular weight cationic polyacrylamide occurs by the adsorption of the polyacrylamide chains on to the particle surface. Thus charge neutralization becomes a major mechanism, where
