【摘要】 以过硫酸钾(KPS)为引发剂,N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,水溶液自由基聚合法制备了羧甲基纤维素(CMC)接枝丙烯酸/乙烯基吡咯烷酮(AA/NVP)高吸水性树脂。采用傅里叶变换红外光谱对产物的结构进行了表征,通过平行实验得到了制备的最佳工艺条件,在此条件下,产物的吸水性能为:吸收去离子水2 339 g/g,吸收生理盐水110 g/g。研究了反应条件对产物的接枝率、吸水性能的影响。更多还原

【Abstract】 The super absorbent resin from carboxymethyl cellulose grafted polyacrylic acid and pyrrolidone was synthesized with potassium persulphate as an initiator and MBA as crosslink agent by the radical polymerization in aqueous solution.The structure of the graft copolymer was characterized by FTIR.Through the parallel experimental methods,the optimum conditions of polymerization to get high water absorbency was determined.Under these conditions,the absorbency of the obtained resin was 2 339 g/g to the distilled water,110 g/g to the 0.9% NaCl solution.The influence of different conditions on the resin’s performance was studied.更多还原