以过硫酸胺（APS）为引发剂，N，N-亚甲基双丙烯酰胺（MBA）为交联剂，采用插层聚合法制备了蒙脱土／海藻酸钠接枝丙烯酸（MMT／SA—g—PAA）高吸水性复合物。通过红外光谱（FT—IR）、扫描电镜（SEM）、热重分析（TGA）对MMT／SA—g—PAA的结构和性能进行了表征。研究了MMT／SA-g—PAA对重金属离子的吸附性能，结果表明室温下MMT／SA—g-PAA对Pb2＋、Cu2＋、Ni2＋的最大吸附量分别为968．9、231．0及236．Omg／g，其中对Pb2＋和Cu计的吸附符合Langmuir吸附模型，而对Ni2＋的吸附符合Freundlich吸附模型。
Montmorillonite/sodium alginate gratt poly （acryhc acid） superabsorbent composxte was prepared by intercalation polymerization of sodium alginate （SA）, acrylic （AA） and montmorillonite （MMT） using ammo- nium persulfate （APS） as an initiator and N,N＇-methylenebisacrylamide （MBA） as a cross linker. The super- absorbent composite was characterized by Fourier transform infrared spectroscopy （FT-IR）, scanning electron microscopy （SEM）, and thermogravimetric analysis （TGA）. Sorption behavior of heavy metal ions on MMT/ SA-g-PAA was investigated. Maximal amount Of adsorption for Pb2＋ , Cu2＋ and Ni2＋ was 968.9,231.0 and 236.0mg/g, respectively, and the adsorption of Pb2＋ and Cu2＋ was in accordance with Langmuir model, while that of Ni2＋ was in accordance with Freundlich model.
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