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首页> 外文期刊>Journal of Polymers and the Environment >Influence of the Rheology Behavior of Water-Soluble Polyacrylamides and Their Efficiency of Flocculation
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Influence of the Rheology Behavior of Water-Soluble Polyacrylamides and Their Efficiency of Flocculation

机译：水溶性聚丙烯酰胺的流变行为及其絮凝效率的影响

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摘要

Organic polymers such as water-soluble polyacrylamides that are used as flocculants in solid-liquid separations, have their flocculation efficiency determined by the behavior of their macromolecules in solution. This behavior is affected by its intrinsic characteristics, especially the presence of ionic groups in its macromolecules. In this context, the present work aimed to characterize three water-soluble polyacrylamides. The effect of the intrinsic properties of each polymer on the behavior of the polymer chains in aqueous solution was compared in different environments. Beside this, the polymers behavior effect on the destabilization of particles was evaluated through kaolin particle aggregation studies. Viscosity results show that the conformation of the macromolecules in solution is altered according to the amount of ionized groups present. This variation, together with other factors such as the affinity with the kaolin particles and the excess of ions in solution, reflects in the flocculation efficiency of kaolin particles, in the flocs size and the flocs sedimentation rate.[GRAPHICS].
机译：在固液分离中用作絮凝剂的有机聚合物（例如水溶性聚丙烯酰胺）的絮凝效率取决于其在溶液中的大分子行为。此行为受其固有特性的影响，尤其是其大分子中离子基团的存在。在这种情况下，本工作旨在表征三种水溶性聚丙烯酰胺。在不同的环境下，比较了每种聚合物的固有性质对聚合物链在水溶液中的行为的影响。除此之外，还通过高岭土颗粒聚集研究评估了聚合物对颗粒失稳行为的影响。粘度结果表明，溶液中大分子的构型根据存在的电离基团的数量而改变。这种变化与其他因素（例如与高岭土颗粒的亲和力和溶液中离子的过多）一起反映在高岭土颗粒的絮凝效率，絮凝物尺寸和絮凝物沉降速率中。

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