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用过硫酸钾 (K2 S2 O8)作引发剂 ,N,N′亚甲基双丙烯酰胺 (bis AM)作交联剂 ,将丙烯酸(AA)与玉米淀粉在高温下快速接枝聚合 ,制得了超强吸水性聚合物 .通过对影响吸水率的主要因素进行考察 ,得到了如下最佳反应条件 :聚合反应和产物干燥温度 180℃ ,时间 30 min,丙烯酸中和度 (ND) 90 .8% ,引发剂和交联剂的用量分别为单体用量的 0 .4 8%和 0 .0 11% .按上述条件制得的超强吸水性聚合物在室温下的吸水率高达 130 0倍 (蒸馏水 ,30 min) ,而且具有优良的保水性 .
Using potassium persulfate (K2 S2 O8) as initiator and N, N ’methylene bisacrylamide (bis AM) as crosslinking agent, acrylic acid (AA) and corn starch were rapidly graft- Super absorbent polymer.The optimal reaction conditions were as follows: the polymerization reaction and product drying temperature was 180 ℃, the time was 30 min, the neutralization degree of acrylic acid (ND) was 90.8% , The amount of initiator and cross-linking agent were 0.48% and 0.11%, respectively.The super absorbent polymer prepared under the above conditions had a water uptake of 130 0 at room temperature Distilled water, 30 min), but also has excellent water retention.