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以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,凹凸棒黏土(APT)和羧甲基纤维素钠(CMC)为复合组分,采用微波辐射方法制备了CMC-g-PAMPS/APT环境友好复合高吸水性树脂,探讨了合成该树脂适宜的反应条件,并利用FTIR对树脂的结构进行了表征。结果表明,APT和CMC参与了接枝共聚反应;适宜的合成条件下,树脂在去离子水和生理盐水中的吸水倍率分别为834 g/g和78 g/g;树脂的吸水倍率随盐溶液浓度和金属离子价态的升高快速下降;在树脂中引入适量的APT能显著提高树脂的吸水倍率、耐盐性能和pH稳定性。
Using 2-acrylamido-2-methylpropanesulfonic acid (AMPS) as monomer, attapulgite clay (APT) and sodium carboxymethyl cellulose (CMC) as the composite components, CMC- g-PAMPS / APT environment-friendly composite superabsorbent. The suitable reaction conditions for the synthesis of the resin were discussed. The structure of the resin was characterized by FTIR. The results showed that APT and CMC were involved in the graft copolymerization. Under proper conditions, the water absorption capacity of resin in deionized water and normal saline were 834 g / g and 78 g / g, respectively. Concentration and the valence of metal ions decreased rapidly. The introduction of the appropriate amount of APT in the resin could significantly improve the resin’s water absorption capacity, salt tolerance and pH stability.