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利用溶液聚合法制备了AC/XG-g-PAA有机-无机复合高吸水性树脂。研究了丙烯酸用量、引发剂用量、丙烯酸中和度、凹凸棒黏土用量、交联剂用量和聚合反应温度等因素对合成复合高吸水性树脂性能的影响,利用傅立叶变换红外光谱仪(FTIR)、扫描电镜仪(SEM)、X射线衍射仪(XRD)和示差扫描量热仪(DSC)对产物进行表征。结果表明,丙烯酸分子与黄原胶发生接枝共聚,凹凸棒黏土与接枝共聚物发生了有机-无机复合,制备的AC/XG-g-PAA高吸水性树脂具有良好的吸水和抗盐性能,提高了高温保水性能,接枝率达137.2%,接枝效率达83.6%,最高吸水倍率达896g/g,吸盐水倍率达126.3g/g。
AC / XG-g-PAA organic-inorganic composite superabsorbent was prepared by solution polymerization. The effects of the amount of acrylic acid, the amount of initiator, the degree of neutralization of acrylic acid, the amount of attapulgite clay, the amount of crosslinking agent and the polymerization temperature on the properties of synthetic superabsorbent polymer were studied. Fourier transform infrared spectroscopy (FTIR) Electron microscopy (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were used to characterize the product. The results showed that acrylic acid molecules and xanthan gum graft copolymerization, attapulgite clay and graft copolymer organic-inorganic composite prepared AC / XG-g-PAA superabsorbent has good water absorption and salt resistance , Which improved the high temperature water retention ability. The grafting rate reached 137.2%, the grafting efficiency reached 83.6%, the maximum water absorption ratio reached 896 g / g and the brine absorption rate reached 126.3 g / g.