摘要
采用K2S2O8/NaHSO3引发丙烯酰胺溶液聚合,探讨了抗交联剂甲酸钠对聚丙烯酰胺(PAM)的粘均分子量及絮凝性能的影响。研究结果表明:以K2S2O8/NaHSO3为引发剂,反应温度20℃,引发剂用量为0.5‰,丙烯酰胺单体浓度40%,抗交联剂用量为5ppm时,可获得最高粘均分子量达1.9×107的聚丙烯酰胺。絮凝实验结果表明:当抗交联剂用量为15ppm时,所合成的PAM的絮凝效果最好,上层液体的透光度可达95%以上。
The polyacrylamide in this paper has been synthesized using potassium peroxydisulfate/sodium hydrogen- sulfite via free radical solution polymerization . We discuss about the influence of anti - crosslinking on molecular weight of polyacrylamide and its performance of flocculation. The results show that the molecular weight can be 1.9 ×107 when K2S2O8/NaHSO3 is used as initiator, with the initiate reaction temperature at 20, initiator dosage of 0. 5‰, monomer concentration of 40% and anti - crosslinking dosage of 5ppm. The flocculation experiment shows that when the dosage of anti -crosslinking is 15ppm, the synthesized PAM reaches the best performance of flocculation, and the transparence of the upper layer of the liquid could be more than 95%.
出处
《环境科学导刊》
2012年第5期1-4,共4页
Environmental Science Survey
关键词
聚丙烯酰胺
抗交联剂
分子量
絮凝性能
polyacrylamide
anti - crosslinking
molecular weight
performance of flocculation
