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首页> 外文期刊>Journal of Applied Polymer Science >The Flocculation of kaolin by cationic polyacrylamides and the effect of cationic surfactant on this process
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The Flocculation of kaolin by cationic polyacrylamides and the effect of cationic surfactant on this process

机译：阳离子聚丙烯酰胺对高岭土的絮凝及阳离子表面活性剂对该过程的影响

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摘要

The flocculation of kaolin suspended in a dilute salt solution was studied as a function of the addition of cationic surfactant and cationic polyacrylamide (CPAM) added separately, consecutively, or simultaneously. Cationic polyacrylamide caused flocculation by bridging when added in low concentrations, but at higher concentrations, charge neutralization became the dominant mechanism and the flocculation rate was highly dependent on the charge density of the polymer. Adsorption of sufficient polymer or surfactant (cetyl pyridinium chloride) prevented immediate adsorption of the other, although surfactant could replace polymer after extended agitation. The adsorption of polymer was greatest when small flocs were formed by charge neutralization or by prolonged shaking. (C) 2002 John Wiley Sons, Inc. [References: 18]
机译：研究了悬浮在稀盐溶液中的高岭土的絮凝与阳离子表面活性剂和阳离子聚丙烯酰胺（CPAM）分别，连续或同时添加的关系。阳离子聚丙烯酰胺以低浓度加入时，会因桥连而引起絮凝，但在较高浓度下，电荷中和作用成为主要机理，絮凝速率高度依赖于聚合物的电荷密度。足够的聚合物或表面活性剂（氯化十六烷基吡啶）的吸附阻止了另一种聚合物或表面活性剂的立即吸附，尽管在长时间搅拌后表面活性剂可以代替聚合物。当通过电荷中和或长时间摇动形成小絮状物时，聚合物的吸附最大。 （C）2002 John Wiley Sons，Inc. [参考：18]

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