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以阿拉伯胶(GA)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、凹凸棒石黏土(APT)为原料,采用微波辐射法,通过接枝共聚合成生物质GA-g-PAMPS/APT高吸水性树脂。利用FTIR、XRD和TG分析了树脂的结构和热稳定性能,探讨了树脂在各种盐溶液和不同p H溶液中的溶胀行为,研究了树脂的溶胀速率和反复吸水性能。结果显示:GA、APT与AMPS之间发生了接枝共聚反应,w(GA)=7.5%、w(APT)=10%时树脂在去离子水和生理盐水中的最大吸水倍率分别为783 g/g和91 g/g。树脂在各种盐溶液和不同p H溶液中表现出良好的响应性和可逆性能。适量引入APT能显著提高树脂的热稳定性、溶胀速率、反复吸水性能和p H稳定性。
GA-g-MS was prepared by the grafting copolymerization of GABA, AMPS and APT with microwave irradiation. PAMPS / APT superabsorbent. The structure and thermal stability of the resin were analyzed by FTIR, XRD and TG. The swelling behavior of the resin in various salt solutions and different p H solutions was discussed. The swelling rate and repeated water absorption of the resin were investigated. The results showed that the graft copolymerization occurred between GA, APT and AMPS. The maximum water uptake capacity of resin in deionized water and normal saline at w (GA) = 7.5% and w (APT) = 10% was 783 g / g and 91 g / g. Resins exhibit good responsiveness and reversibility in various salt solutions and different p H solutions. Appropriate amount of APT can significantly improve the thermal stability of the resin, swelling rate, repeated water absorption and p H stability.