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以玉米芯为原料,甲基丙烯酸丙烯酰胺为混合单体,硫酸亚铁铵-过氧化氢为还原体系引发剂,N,N’-亚甲基双丙烯酰胺为交联剂,在水介质中合成了高吸水性树脂玉米芯接枝共聚物,并对其性能进行了一系列研究。结果表明:高吸水性树脂在120min时吸水率达到最大值178g/g;在电解质溶液中,随着溶液浓度增加,吸水率下降,且溶液中阳离子价态越高,对树脂的吸水率影响也越大;高吸水性树脂可抑制土壤中的水分蒸发,在实验范围内,减少了约10g的水分损失;此外,高吸水性树脂具有再生性能,重复3次后恢复率可达91%。
Using corn cob as raw material, methacrylic acid acrylamide as a mixed monomer, ammonium ferrous sulfate - hydrogen peroxide as a reducing system initiator, N, N’-methylenebisacrylamide as a cross-linking agent in an aqueous medium Synthesis of super absorbent polymer corncob graft copolymer, and its performance were studied. The results showed that the water absorption of superabsorbent resin reached the maximum of 178 g / g at 120 min. With the increase of solution concentration, the water absorption decreased, and the higher the cation valency in solution, the effect on the water absorption of resin was also The higher the water-absorbent resin can inhibit the evaporation of water in the soil, in the experimental range, reducing the water loss of about 10g; In addition, superabsorbent resin has a regenerative performance after repeated 3 times the recovery rate of up to 91%.