粘土-淀粉接枝共聚丙烯酰胺超吸水性复合材料的合成及性能研究

SYNTHESIS AND PROPERTY OF CLAY-ORGANIC RESIN SUPER ABSORBENT COMPOSITE

用硝酸铈铵作为引发剂 ,N ,N′ -亚甲基双丙烯酰胺作为交联剂 ,使淀粉接枝共聚丙烯酰胺 ,在粘土存在的悬浮液中反应 ,然后水解 ,制得粘土 有机树脂超吸水复合材料。室温下 ,该超吸水复合材料在饱和状态可吸蒸馏水 40 0 0倍。文中还探讨了粘土种类、粘土添加量。

Using ammonium ceric nitrate and N,N′ methylene bis acrylamide as an initiator and cross linkage agent respectively,a super absorbent was prepared by graft polymerization of acrylamide on starch in the present of clay suspension,followed by hydrolyzing.The water absorbency of the sample under room temperature is 4000g H 2O/g dry sample.The influence of the kind of clay,content of clay,cross linkage agnet on absorbent properties is discussed in this paper.The results show that clay powder,as a kind of functional filler,enhances comprehensive absorbent property of the composites.