耐盐性高吸水树脂的合成及性能研究

摘要

A anti-salt sodium polyacrylate-co-acrylamide super absorbent resin was polymerized by aqueous solution with N,iV-methylene bisacrylamide as crosslinker and potassium persulfate as initiator.The effect of some react conditions,such as the ratio of monomers,neutralization degree,initiator,crosslinker,reaction temperature,the drying temperature on the absorbency of and the absorption rate were studied here.The structure and appearance of the morphology of resin were characterized.The absorption of this kind of resin was 1 390 g/g and 95 g/g.%以N,N-亚甲基双丙烯酰胺为交联剂,过硫酸钾为引发剂,采用水溶液聚合法合成了耐盐性聚丙烯酸钠-co-丙烯酰胺高吸水树脂.研究了单体配比、丙烯酸中和度、引发剂、交联剂以及反应温度和烘干成型温度对吸盐水倍率和吸盐水速率的影响.对其结构以及外观形貌进行了表征.合成的高吸水树脂吸蒸馏水的倍率为1 390 g/g,吸盐水倍率为95 g/g.