【作者】 张娜； 申艳敏；

【Author】 ZHANG Na,SHEN Yanmin~* (School of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001)

【机构】 河南工业大学化学化工学院；

【摘要】 高吸水性树脂是一种新型功能高分子材料,本文以丙烯酰胺(AM)为单体,海藻酸钠为原料,过硫酸钾为引发剂,N,N′-亚甲基双丙烯酰胺为交联剂,研究了各因素对海藻酸钠与丙烯酰胺在水溶液中接枝共聚反应的影响,通过正交实验得到最佳工艺条件为即海藻酸钠与单体质量配比0.3:1,交联剂浓度0.175%,引发剂浓度1.25%,反应温度60℃,反应时间2.5 h。在该条件下聚合物在蒸馏水、自来水和生理盐水中最大吸液倍率分别为116、75.8和57.4 g/g。根据极差分析得到各因素对树脂吸液倍率的影响顺序大小即反应温度>引发剂浓度>交联剂浓度>反应时间>海藻酸钠与单体配比。更多还原

【Abstract】 Super absorbent polymers are new types of functional polymer materials.In this experiment, acrylamide was used the monomer.sodium alginate as raw mateials,N,N’-methylenediacrylamide as the cross-linker,potassium sulfate as the initiator.Factors affecting the reaction of graft co-polymerization of acrylamide onto alginate in water solution were conducted.By orthogonal experiment the optimum conditions were determined as ratio of sodium alginate to acrylamide 0.3:1,concentrations of cross-linking agent 0.175%,concentrations of initiator agent 1.25%,reaction temperature 60℃and reaction time 2.5 h.Under the best polymerization condition,distilled water absorbency 116 g/g,water-absorbency(75.8 g/g),salt solution-absorbency(57.4 g/g),respectively.Through range analysis,the influenceing order for the absorbency of resin was reaction temperature>concentrations of initiator agent>concentrations of cross-linker agent>reaction time>ratio of sodium alginate to acrylamide.更多还原