共聚合阳离子聚丙烯酰胺的合成及性能测试  

Synthesis and performance test of cationic polyacrylamide by copolymerization

作　　者：李正惠[1] 郭艳丽[1] 

机构地区：[1]北京化工大学理学院应用化学系,北京100029

出　　处：《工业水处理》2003年第4期38-41,共4页Industrial Water Treatment

摘　　要：首先合成阳离子单体N-(二甲氨基)甲基丙烯酰胺,然后用共聚合法合成阳离子聚丙烯酰胺。单体合成中探讨了羟甲基二甲胺的合成工艺,当n(甲醛) n(二甲胺)=2 1,反应温度为55℃,反应时间为2h时,羟甲基二甲胺的收率最高;并通过NMR确定了其结构。采用正交实验,研究了共聚合反应中n(丙烯酰胺) n(阳离子丙烯酰胺)、温度、引发剂用量对聚合反应的影响。研究结果表明,n(丙烯酰胺) n(阳离子丙烯酰胺)=10 1,温度为45℃,引发剂质量分数为0.04%时,效果最佳,达到了一定的絮凝效果。N-(dimethylaminon)methyl acrylamides is synthesized first. Then hydroxymethyl dimethylammonia is synthesized with cationic polyacrylamide by copolymerization. When formaldehydedimethylamine(mol ratio) is 21,the reaction temperature is 55 ℃ and the reaction time is 2 h,the yield of hydroxymethyl dimethylammonia is the highest. Acrylamide/cationic acrylamide (mol ratio),temperature and the quantity of redox catalyst have influence on the copolymerization are studied by doing orthogonal test. The results indicate that when acrylamide/cationic acrylamide(mol ratio) is 101,the temperature is 45 ℃,the quantity of redox catalyst is 0.04%(the quantity of redox/the total quantity of monomer),the effect is the best. Certain flocculating effect is gained.

关 键 词：水溶液共聚合 聚丙烯酰胺 共聚合 絮凝剂 水处理 合成 性能 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]