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Polyacrylamide‐co‐sodium acrylate has been prepared via copolymerization of acrylamide and acrylic acid, or the hydrolysis of a pre‐formed nonionic polymer. Both macromolecules had a charge of 24 mol% with a molar mass of 25 million g/mol. While one might expect similar performance, the hydrolyzed materials were superior in rheology modification, while the copolymerized samples worked better as flocculants...
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