反相悬浮聚合法制备AMPS/AA高吸水树脂

以N，N-亚甲基双丙烯酰胺为交联剂，过硫酸钾为引发剂，span60为分散稳定剂，采用反相悬浮聚合法制得2-丙烯酰胺基-2-甲基丙磺酸（AMPS）和丙烯酸（AA）共聚高吸水性树脂．正交实验结果表明最佳合成条件：^nAMPS：^nAA=1.8：1，中和度70％，引发剂0．1％，交联剂0．05％．合成的树脂在室温下吸蒸馏水和0．9％（wt％）NaCl溶液分别为990g/g和123g/g．

AMPS/AA Superabsorbent Resin Synthesized by Inverse Suspension Polymerization

Inverse suspension copolymerization of acrylate acid （AA）/acrylamidomethylpropane sulfonic acid （AMPS） is studied by using methylene bisacrylamide as the cross linking agent, potassium persulfate as the initiator and the span 60 as the stabilization agent. The optimum conditions from orthogonal experiment are as follows： ^nAMPS ： ^nAA = 1.8 ： 1, neutral- ization degree of acrylate acid 70 % ,wt （initiator） = 0.1% ,wt （cross - linking agent） = 0.05 %. Under the optimum conditions, the ability of absorbing water by the resin increases by 990 and that of absorbing NaCl （0.9 % ） solution increases by 123g/g.