魔芋超强吸水剂的合成及吸液性能研究  

Synthesis and Water Absorption Properties of Konjac Superabsorbent

作　　者：刘珍贤[1] 

机构地区：[1]贵州工业职业技术学院,贵州贵阳550008

出　　处：《广州化工》2011年第12期88-91,共4页GuangZhou Chemical Industry

摘　　要：以过硫酸钾为引发剂,N,N'-亚甲基双丙烯酰胺为交联剂,采用水溶液自由基聚合法,合成了魔芋粉-丙烯酸(钠)-丙烯酰胺超强吸水剂。采用均匀试验设计法对该合成工艺进行优化,最佳工艺条件为单体总用量(单体/魔芋粉)8.79 g·g-1、引发剂量(引发剂/魔芋粉)4.50%、反应温度66.7℃、交联剂量(交联剂/魔芋粉)1.42%、反应时间2.55 h、丙烯酸中和度81.74%、单体比例51.7%。产物吸水率为751.3 g·g-1,吸盐水率为128.6 g·g-1。Potassium persulfate as initiator,N,N＇-methylene-bis-acrylamide as crosslinker by means of radical polymerization in aqueous solution,konjac powder-acrylic acid（sodium）-acrylamide superabsorbent was synthesized.With the uniform design method,Konjac flour-AA-AM was synthesized.The results showed that the optimal conditions for the total amount of monomer（monomer/konjac flour） was 8.79 g·g-1,initiator（initiator/konjac flour） was 4.50%,reaction temperature was 66.7 ℃,amount of crosslinking agent（crosslinking agent/konjac flour） was 1.42%,reaction time was 2.55 h,the degree of acrylic acid was 81.74%,and monomer ratio was 51.7%.Under these conditions,water absorption of konjac powder-acrylic acid（sodium）-acrylamide graft copolymer was 751.3 g·g-1 and salt absorption was 128.6 g·g-1.

关 键 词：魔芋粉 超强吸水剂 吸水性能 均匀试验设计 最佳工艺条件 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]