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以羧甲基纤维素钠、丙烯酸和丙烯酰胺为单体原料,N,N′-亚甲基双丙烯酰胺为交联剂,过硫酸钾作为引发剂,采用反相悬浮法制备羧甲基纤维素钠接枝丙烯酸/丙烯酰胺高吸水性聚合物。研究了高吸水性聚合物的吸液倍率与引发剂、交联剂和反相悬浮体系油水比的定量关系,并探讨了其在不同温度下的保水性能以及在自然条件下和在土壤环境下的降解能力。结果表明:在引发剂和交联剂分别为单体含量的0.85%和0.08%,油水比为4∶1时,该吸水性聚合物吸水倍率达到最大;在较高温度下,聚合物仍具有较好的保水性能;该聚合物在自然条件下和土壤环境中均具有良好的降解性能。
Using carboxymethyl cellulose sodium, acrylic acid and acrylamide as raw materials, N, N’-methylenebisacrylamide as cross-linking agent, and potassium persulfate as initiator, the reversed-phase suspension method was used to prepare carboxymethyl cellulose Su-Na Grafted Acrylic / Acrylamide Superabsorbent Polymer. The quantitative relationship between the liquid absorption ratio of superabsorbent polymer and the ratio of oil to water of initiator, cross-linking agent and reversed-phase suspension was studied. The water-holding capacity of superabsorbent polymer at different temperatures and the effect of water absorption under natural conditions and in soil environment Degradation. The results showed that the water absorption ratio of the water-absorbing polymer reaches the maximum at the ratio of 0.85% and 0.08% of the monomer content and the oil-water ratio is 4:1 respectively. At higher temperature, the polymer still has Good water retention properties; the polymer has good degradation properties under natural conditions and in the soil environment.