胺甲基化聚丙烯酰胺稀溶液行为的研究——pH值对粘性行为及其絮凝作用的影响

摘要: pH值对胺甲基化聚丙烯酰胺(CPAM)稀溶液粘性行为的研究表明:不同的CPAM-H_2O溶液体系(胺化度28.8～38mol％,外加盐浓度0～0.2M)的粘性行为,特性粘数η和Huggins常数k′随溶液pH值变化分别是现极大值和极小值;CPAM对有机污泥脱水絮凝作用随溶液pH值变化存在极大值。本文从CPAM电荷的形成、电荷密度的增加以及屏蔽出发讨论了上述两种极限现象。

Abstract: The viscosity behavior of cationic polyacrylamide (CPAM) from the Mannish re-action of PAM, with different degrees of amination (28.8 and 38.0 mo1%) in water withadded salt (0-0.2 M NaNO_3) and covering pH range of 1-10, have been investigated.It was foun