Abstract:

The composite super absorbent resin，xanthan gum-g-poly（acrylic acid-co-cryl amide）/ attapulgite clay with good salt tolerance was synthesized through inverse suspension copolymerization. The influence factors of preparing composite super absorbent resin were studied. FT-IR，XRD and TGA were used on characterization of the super absorbent resin. The results showed that：Si-OH and AM/AA participated in graft polymerization reaction with xanthan gum. The preparation of super absorbent resin under optimum conditions has good properties of water absorption and salt resistance，with the highest water absorption up to 871.2 g/g and 0.9% NaCl solution absorption up to 119.8 g/g. Degradation tests showed that super absorbent resin could be degraded by microbes，and the degradation degree was up to 26.1% within 90 days.

摘要：

采用反相悬浮聚合法制备了具有耐盐型的XG-g-P（AA-co-AM）/AC复合高吸水性树脂，并对其吸水性能及其影响因素进行了考察，借助傅里叶红外光谱仪（FT-IR）、X射线衍射仪（XRD）、热重分析仪（TGA）对树脂的结构进行了表征。结果表明，凹凸棒黏土（AC）表面的硅羟基可能与丙烯酸（AM）、丙烯酰胺（AA）和黄胞胶（XG）共同参与了接枝共聚反应，复合树脂的热稳定性有所提高。比较理想的工艺条件下制得的树脂具有良好的吸水和抗盐性能，最高吸水倍率达871.2 g/g，最高吸盐水倍率达119.8 g/g。生物降解性能实验说明了复合树脂可以被土壤中的微生物降解，90天降解率达26.1%。