| 标题 |
The synthesis and flocculating property of cationic polyacrylamides
阳离子聚丙烯酰胺的合成及絮凝性能
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| 其它 | samples of cationic polyacrylamides(CPAMs) with degree of cationization(CD) 5.8-20.1% have been synthesized by reaction of acrylamide with epichlorohydrin in different molar ratios at different temperature and pH value and then by cationization with trimethylamine in molar ratio 11 at 50 and pH=9.0. The flocculating property of these CPAM samples is investigated for aqueous bentonite colloidal systems through determining settled liquid transmittance and flocculate volume. In all cases two coalescing points are observed. It is shown that the CPAM samples with CD=13.2-17.8% possess the most powerfull flocculating capacity. The flocculating mechanisms involved are discussed. |
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