摘要
以聚丙烯酰胺（ＰＡＭ）相对分子质量和ＰＡＭ溶液粘度为指标，讨论了聚丙烯酰胺的低温化学降解在水介质中，在过氧化物的作用下，由于化学降解反应，使得聚丙烯酰胺的相对分子质量明显下降。过氧化物的性质和浓度、降解温度和降解时间等降解条件均极大地影响聚丙烯酰胺的降解速度和降解产物的相对分子质量。对聚丙烯酰胺的水解和相应水溶液粘度的研究结果表明，在本试验条件范围内聚丙烯酰酰胺在降解过程中的水解程度很小，且少量的水解对聚丙烯胺水溶液粘度的影响不大。
The accelerated low temperature degradation and molecular control of polyamide were studied.In aqueous solution,the molecular weight of PAM decreased obviously under the action of some peroxides.The properties and concentration of the peroxides,the degradation time and temperature are significantly effected the rate of degradation and the end molecular weight of PAM.The effect of hydrolysis of PAM on the viscosity of PAM solution was also investigated.The results showed that the hydrolysis of PAM was slight in our research scope,and decrease of the viscosity caused by hydrolysis can be neglected.
出处
《化学工业与工程》
CAS
1999年第1期44-48,共5页
Chemical Industry and Engineering
关键词
聚丙烯酰胺
化学降解
水介质
低温
polyacrylamide,chemical degradation,hydrolysis,rotation viscosity
