玉米淀粉接枝丙烯酰胺合成

The Synthetic Regularities of Graft Copolymerization of Acrylamide onto Corn Starch

以Ce4 +为引发剂 ,研究了玉米淀粉 丙烯酰胺接枝共聚物形成的条件 .结果表明 ,引发剂用量、单体用量、反应温度及反应时间对合成产物的接枝率和单体聚合率有很大的影响 ,当淀粉用量为 5 .0 g ,引发剂用量为 1.0mL ,温度为 6 0℃ ,单体用量为 8.0 g时 ,单体聚合率最大 .另外 ,还研究了淀粉用量 ,Ce4 +-S2 O2

Graft copolymerization of Acrylamide (AM) onto corn starch using ceric ion as initiator was investigated. The results showed that the percent grafting (G%) and the monomer polymerization (Y%) were considerably affected by Ce 4+ ,AM, reaction time and temperature. The maximum Y% was obtained at 1.0 ml of Ce 4+ , 8.0 g of AM, 5.0 g of starch at 60 ℃. In addition, using different amount of starch and Ce 4+ -S 2O 2+ 8 as a compound initiator, the role of starch in craft copolymerization was studied.