摘要
采用丙烯酰胺(AM)与阳离子单体二甲基二烯丙基氯化铵(DMDAAC)共聚制备高分子量的CPAM。研究了影响AM与DMDAAC共聚物的平均分子量的因素,得到了优化条件为:单体浓度为30%,DMDAAC与AM摩尔比为5∶95,聚合温度为30℃,低温段引发剂用量为0.05‰(占单体质量分数,下同),K2S2O8与NaHSO3质量比为1∶1,偶氮二异丁基脒盐酸盐(V-50)用量为0.025‰,尿素用量为40‰,乙二胺四乙酸二钠(EDTA-2Na)用量为0.05‰,在此优化条件下聚合反应16 h后得到分子量为1.217×107的阳离子型聚丙烯酰胺(CPAM)。CPAM被广泛应用在各种水处理和固液分离过程中。
The high molecular weight CPAM was polymerized by using acrylamide （AM） and diallyldimethylammonium chloride （DMDAAC） as monomers. The factors which affect the average molecular weight of the polymer of AM and DMDAAC were investigated. The optimal reaction conditions are as follows： the concentration of monomer AM was 30% ,while DMDAAC was 5% ;the reaction temperature was 30 ℃, the amount of initiators at the low temperature stage was 0.05‰ （ compared to the weight of the monomers joining the polymerization） ,while V-50 was 0.025‰, the weight ratio of potassium persulphate to sodium bisulphite is 1 ： 1 ,the amount of carbamide was 40‰,and complexing agent was 0. 05‰, besides , aerate nitrogen gas for8 min,then the high molecular weight polymer （hi = 1. 217×10^7） could be got after 16 h reaction. The cationic polyacrylamide （CPAM） ,which has been widely used in water treating and separation process of solid and liquid.
出处
《应用化工》
CAS
CSCD
2008年第2期117-120,共4页
Applied Chemical Industry
基金
国家973课题(2005CB623701)
