淀粉接枝丙烯酰胺絮凝剂的制备及性能研究

Syntheses and Flocculation Properties of Graft Copolymer of Acrylamide

研究了淀粉接枝丙烯酰胺制备絮凝剂的工艺过程 ,测定了其絮凝性能。实验结果表明 :玉米淀粉为接枝反应适宜的原料 ,原料丙烯酰胺和淀粉的最佳重量比为 2 .7∶1,最佳引发剂浓度为 1× 10 -3 mol/L ;接枝聚丙烯酰胺絮凝剂絮凝效果受温度和pH值的影响小 ,絮凝湿法磷酸料浆的最佳用量为 4mg/kg ,而采用市售聚丙烯酰胺的最佳用量为 6mg/kg。

Graft copolymer of starch with acrylamide was synthesized and its flocculating ability in wet phosphate acid was studied. The product has ideal flocculating efficiency less influence of pH and tempereture and its proper dosage is 4 mg/kg in treating wet phosphate acid, when the raw material is corn starch, weight rate of acrylamide to corn starch is 2.7∶1 and the concentration of initiator is 1×10 -3 mol/L.