高取代度阳离子淀粉—丙烯酰胺接枝共聚物的制备及应用  

Synthesis and Application of the Graft Copolymer of Cationic Starch and Acrylamide

作　　者：白雯锐[1] 樊慧明[1] 孟云兰[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《造纸科学与技术》2010年第2期45-48,共4页Paper Science & Technology

摘　　要：以高取代度的阳离子淀粉为原料,硝酸铈铵为引发剂,制备了高取代度阳离子淀粉—丙烯酰胺接枝共聚物,研究了丙烯酰胺与阳离子淀粉质量比、反应温度、反应时间、引发剂浓度对接枝率和接枝效率的影响。结果表明:接枝率和接枝效率最高的条件为丙烯酰胺与阳离子淀粉质量比2.5∶1,反应温度55℃,反应时间3h,引发剂浓度2.5mmol/L。将合成的聚合物用于废水处理,高取代度阳离子淀粉—丙烯酰胺接枝共聚物的用量为4mg/L对麦草浆中段废水的处理效果最好,废水CODcr去除率为34.1%,浊度的去除率为13.5%。The graft copolymer was synthesized with high DS cationic starch and acrylamide initiated by （ NH4 ） 2 Ce （ NO3 ） 6- Factors on efficiency of graft were discussed. The optimum synthesis conditions for cationic starch （ DS = 0.35 ） are the mass ratio of acrylamidel to cationic starch 2.5： 1, the dosage of initiator 2.5 retool/L, reaction tem- perature 55℃, reaction time 3h. The graft copolymer was used as flocculants. In the treatment of wheat straw pulp washing, screening and bleaching waste water at a dosage of 4rag/L, the CODcr removal was 34.1% , turbidity removal was 13.5%.

关 键 词：阳离子淀粉 丙烯酰胺 接枝共聚 絮凝剂 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]