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首页> 外文期刊>Journal of Applied Polymer Science >Flocculation and sedimentation of cane sugar juice particles with cationic homo- and copolymers
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Flocculation and sedimentation of cane sugar juice particles with cationic homo- and copolymers

机译：阳离子均聚物和共聚物对蔗糖汁颗粒的絮凝和沉降

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摘要

Rapid flocculation and sedimentation of suspended particles in primary cane sugar juice is achieved using a high molecular weight anionic polymer flocculant. This work reports on efforts to enhance the performance of an anionic flocculant by the addition of cationic polymers. Homopolymers of poly(trimethylammonium ethyl methacrylate chloride) (TMAEMAC) and cationic copolymers of poly(trimethylammonium ethyl acrylate chloride) (TN4AEAC) and acrylamide were synthesized and their performance, to enhance the flocculation and sedimentation of cane sugar juice particles, was evaluated by turbidity and settling rate measurements. The charge-patch mechanism best explains the performance of the homopolymers, whereas the action of the copolymers is attributed to the bridging mechanism. The results of this work indicate that the copolymers are more effective than the homopolymers to aid flocculation and sedimentation of the cane sugar juice particles, and that the best-performing polymers are those that act by the bridging mechanism. Addition of increased amounts of anionic flocculant did not confer an improvement, suggesting that the cationic bridging flocculant targets a different population of particles that is largely responsible for the residual turbidity. (C) 2003 Wiley Periodicals, Inc. [References: 19]
机译：使用高分子量阴离子聚合物絮凝剂可实现初级蔗糖汁中悬浮颗粒的快速絮凝和沉降。这项工作报道了通过添加阳离子聚合物来增强阴离子絮凝剂性能的努力。合成了聚甲基丙烯酸三甲基铵氯化物（TMAEMAC）的均聚物和聚甲基丙烯酸三甲基铵氯化物（TN4AEAC）和丙烯酰胺的阳离子共聚物，并通过浊度评估了它们的性能，以增强蔗糖汁颗粒的絮凝和沉淀作用。和沉降速率测量。电荷修补机制最能解释均聚物的性能，而共聚物的作用则归因于桥联机制。这项工作的结果表明，该共聚物比均聚物更有效地促进了蔗糖汁颗粒的絮凝和沉降，并且性能最好的聚合物是那些通过桥联机制起作用的聚合物。添加增加量的阴离子絮凝剂并不能带来改善，这表明阳离子桥接絮凝剂的目标是不同的粒子群，这是造成残留浊度的主要原因。 （C）2003 Wiley Periodicals，Inc. [参考：19]

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