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首页> 外文期刊>Journal of Applied Polymer Science >Water-soluble acrylamide copolymers. X. Flocculation efficiencies of poly[acrylamide-co-N,N-dimethylacrylamide], poly[acrylamide-co-methacrylamide], poly[acrylamide-co-N-t-butylacrylamide], and their cationic derivatives
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Water-soluble acrylamide copolymers. X. Flocculation efficiencies of poly[acrylamide-co-N,N-dimethylacrylamide], poly[acrylamide-co-methacrylamide], poly[acrylamide-co-N-t-butylacrylamide], and their cationic derivatives

机译：水溶性丙烯酰胺共聚物。 X.聚[丙烯酰胺-共-N，N-二甲基丙烯酰胺]，聚[丙烯酰胺-共-甲基丙烯酰胺]，聚[丙烯酰胺-N-叔丁基丙烯酰胺]及其阳离子衍生物的絮凝效率

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A hydrated, 1% by weight Na-kaolinite suspension in deionized water was prepared, completely characterized, and reproducible measures of flocculation efficiency were validated. Flocculation tests of copolymers of acrylamide (AM) with dimethylacrylamide (DMA), methacrylamide (MeAM), or N-t-butylacrylamide (NTBAM) with 1% Na-kaolinite suspensions gave average settling rate rates which decreased as the proportion of DMA, MeAM, or NTBAM in the copolymer increased. However, for a similar weight-average molecular weight and slightly lower , the copolymer from DMA-co-AM-3 gave settling rates and supernatant turbidities comparable to similar types of commercial polymers. This new copolymer was also more resistant to changes in pH or the presence of an electrolyte than were the tested commercial polymers. Cationic derivatives of the new copolymers gave lower average settling rates and higher supernatant turbidities than those of Percol 721 (cationic PAM), probably because of their lower charge densities. (C) 2002 Wiley Periodicals, Inc. [References: 36]
机译：制备了在去离子水中的水合，重量百分比为1％的高岭土悬浮液，对其进行了完全表征，并验证了可重复性的絮凝效率测量方法。丙烯酰胺（AM）与二甲基丙烯酰胺（DMA），甲基丙烯酰胺（MeAM）或Nt-丁基丙烯酰胺（NTBAM）与1％高岭土悬浮液的共聚物的絮凝测试得出平均沉降速率随DMA，MeAM或共聚物中的NTBAM增加。然而，对于相似的重均分子量和稍低的r（g），与相似类型的商业聚合物相比，来自DMA-co-AM-3的共聚物给出了沉降速率和上清液浊度。与测试的商业聚合物相比，这种新的共聚物还更耐pH值的变化或电解质的存在。与Percol 721（阳离子PAM）相比，新共聚物的阳离子衍生物具有较低的平均沉降速率和较高的上清浊度，这可能是由于其电荷密度较低。 （C）2002 Wiley Periodicals，Inc. [参考：36]

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