以丙烯酸(AA)、马来酸酐(MA)为聚合单体,亚甲基双丙烯酰胺(MBA)为交联剂,安息香异丙醚为光引发剂,采用紫外光辐射聚合法合成了P(AA-MA)高吸水树脂。讨论了AA中和度、MA氨化度、单体质量比、交联剂的使用量等因素对吸水树脂吸水性能的影响。通过红外光谱(FT-IR)、扫描电子显微镜(SEM)和热重分析(TG)对树脂的分子结构、微观形貌和热稳定性进行了表征。结果表明,优化实验条件下所制备的高吸水树脂在蒸馏水中的最大吸水倍率为1112.5g/g,在0.9%盐水中的最大吸水倍率为100.8g/g。
Using acrylic acid (AA) and maleic anhydride (MA) as monomers,methylenebisacrylamide (MBA) as crosslinking agent,and benzoin isopropyl ether (MSDS) as photoinitiator,poly (acrylic acid-maleic anhydride) superabsorbent resin P(AA-MA) was synthesized under UV radiation.The effects of neutralization degree of AA,ammoniation degree of MA,monomer mass ratio,amount of crosslinking agent and other factors on the water absorption performance of the superabsorbent resin (SAR) were discussed.The molecular structure,morphology and thermal stability of the as-prepared SAR was characterized by FT-IR,SEM and TG,respectively.The results showed that the SAR prepared under optimized experiment conditions had good water absorption and water retention capacity.The maximum water absorption in distilled water and 0.9% brine were 112.5g/g and 100.8g/g,respectively.
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基金资助
辽宁省教育厅2021年度基本科研项目(LJKZ0374)
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