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Polymers stability against aggregation

The formation of hydroxyaluminosilicate species at near-neutral pH is unique. No interactions occur between silicic acid and Ca or Mg at less than pH 10, so that the transport and binding of these cations is unhindered. The interactions of Fe with silicic acid at near-neutral pH are very different from those of aluminum. Acidic solutions containing Fe (10 " M) with a threefold molar excess of silicic acid remain clear on neutralization no visible precipitate forms. Instead, Fe-0 polymers are formed as spherical hydrated ferric oxide particles 10-15 nm in diameter, stabilized against growth, aggregation, and precipitation by an adsorbed layer of silicic acid [23]. [Pg.761]

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See also in sourсe #XX -- [ Pg.63 ]



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Aggregate stability

Aggregate stabilization

Polymer aggregate

Polymer aggregation

Polymer stabilization

Polymer stabilization stabilizers

Stabilizer polymer

Stabilizing polymers

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