Abstract
Regularities of the flocculation of kaolin suspension with cationic polyelectrolytes based on 1,2-dimethyl-5-vinylpyridinium methyl sulfate were studied by turbidimetry, optical microscopy, and sedimentation methods. It was found that poly(1,2-dimethyl-5-vinylpyridinium methyl sulfate)-co-N-vinylpirrolidone promotes the formation of dense flocs and provide a complete sedimentation of the kaolin suspension at a high rate. The effect of dense floc formation is likely caused by a copolymer hydrophobicity and a compression of adsorbed macrocoils accompanied by squeezing of a dispersion medium out of interparticle space.
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Navrotskii, A.V., Dryabina, S.S., Malysheva, Z.N. et al. Formation of Flocs and Sediments in the Presence of Cationic Polyelectrolytes. Colloid Journal 65, 335–340 (2003). https://doi.org/10.1023/A:1024210907581
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DOI: https://doi.org/10.1023/A:1024210907581