【摘要】 以玉米淀粉和丙烯酰胺作为原料,高锰酸钾作为引发剂,采用水溶液聚合法制备了淀粉接枝丙烯酰胺聚合物(S-g-PAM),并用红外光谱对产物进行表征。通过正交优化得S-g-PAM最佳制备工艺为:反应温度50℃,引发剂浓度1.8 mmol/L,m(单体)∶m(淀粉)=2∶1,反应时间120 min,pH=3。用此工艺制备的S-g-PAM处理印染废水,在pH=7,温度60℃,S-g-PAM用量0.6 g,搅拌25 min的条件下,印染废水的色度去除率达96.50%,COD去除率达93.64%,优于单独使用聚丙烯酰胺(PAM)的处理效果。更多还原

【Abstract】 Acrylamide grafted starch copolymer was prepared by polymerization in solution method with corn starch and acrylamide as raw materials and potassium permanganate as initiator, and the product was characterized by IR. The optimum preparation conditions of S-g-PAM were obtained through the orthogonal test, the reaction temperature was 50 ℃, the concentration of initiator was 1.8 mmol/L, the ratio of starch to monomer was 2∶1, reaction time was 120 min, pH=3. S-g-PAM prepared under these conditions was applied in printing and dyeing wastewater treatment. The color removal rate could reach 96.50% with 0.6 g of S-g-PAM at pH=7 and 60 ℃ and stirring for 25 min, and the COD removal rate was 93.64%. The treatment effect was better than that of polyacrylamide.更多还原