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研究了外加盐的种类和浓度、胺化度、PH值、温度和存放时间对阳离子聚丙烯酰胺(CPAM)溶液的粘性行为的影响。结果表明CPAM的特性粘数[η]随外加盐浓度Cs的增大而降低,尤其是在两价盐存在下更明显。在高盐浓度时,[η]与Cs成反比。另外,[η]分别在胺化度约为40mol％或PH=3时显示一个极大值。相反,[η]在温度40℃左右显示一个极小值。CPAM溶液粘度还随着存放时间的增长而降低。
The effects of the type and concentration of added salt, the degree of amination, pH, temperature and storage time on the viscous behavior of cationic polyacrylamide (CPAM) solution were investigated. The results showed that the intrinsic viscosity [η] of CPAM decreased with the increase of Cs concentration, especially in the presence of divalent salts. At high salt concentrations, [η] is inversely proportional to Cs. In addition, [η] showed a maximum when the degree of amination was about 40 mol% or when PH = 3, respectively. In contrast, [η] shows a minimum at a temperature of about 40 ° C. The viscosity of the CPAM solution also decreases as the storage time increases.