玉米淀粉接枝丙烯酸钠合成高吸水性树脂  

Synthesis of Super Water Absorbent by Graft Copolymerizing Starch and Sodium Acrylate

作　　者：温国永[1] 温国华[1] 王奂玲[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2002年第3期292-294,共3页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自治区教委基金资助项目

摘　　要：玉米淀粉糊化后 ,以过硫酸铵为引发剂 ,与丙烯酸发生接枝共聚反应 ,制的超强吸水剂 .籍此讨论了引发剂用量 ,丙烯酸与淀粉配比等因素对吸水性能的影响 .引发剂用量为淀粉用量的 1 .5 % ,淀粉 /丙烯酸 (质量比 )为 1 /6时 ,合成的超强吸水剂室温下在饱和状态时可吸收 5 5 0倍的蒸馏水 ,2 5 0倍自来水 ,80～ 1 0 0倍生理盐水 ,4 0～ 5 0倍人工尿 ,同时还具有优越的保水性能 .Under the action of ammonium persulfate as the initiator, the pasting starch forms starch free radical. The graft polymerization occurs between starch free radical and sodium acrylate,from which the super water absorbent is prepared.Through experiments we discuss the influences on the properties of the super water absorbent by amount of initiator,the ratio of monomer and starch etc. When the amount of initiator is 1.5%,and starch/monomer is one over six ,this super water absorbent is capable of absorbing distilled water up to 550 times,water 250 times and 0.9% salt water 80-100 times in its saturated state at ambient temperature.It has also excellent performance of water retenting.

关 键 词：玉米淀粉 合成 高吸水性树脂 丙烯酸钠 超强吸水剂 接枝共聚反应 吸水性能 引发剂 

分 类 号：TQ325[化学工程—合成树脂塑料工业] TQ316.343