中文摘要：

利用葡萄糖酸改性碱性钙基膨润土制备了一种与水溶性高分子材料亲合性较强的剥离型葡萄糖酸蒙脱石。通过单因素实验，分析了葡萄糖酸用量、反应温度、分敞剂浓度等因素对葡萄糖酸蒙脱石剥离的影响，认为蒙脱石剥离可能是由于层间发生激烈的中和反应造成的。电子显微镜扫描表明这种剥离型蒙脱石为片状结构，纳米片的厚度为75-100nm；DSC测定表明该葡萄糖酸蒙脱石的失水温度与葡萄糖酸钙相同，葡萄糖酸基团分布在纳米片的表面上；IR扫描表明葡萄糖酸与蒙脱石的结合方式为化学键；XRD表征说明该葡萄糖酸蒙脱石仍为层状结构，为多层蒙脱石晶片组成。将该葡萄糖酸蒙脱石添加到木薯淀粉糊中，能使淀粉糊的黏性增加一倍。

英文摘要：

A kind of exfoliated gluconic acid montmorillonite （E-GAM） which has a good affinity with water-soluble polymers was prepared via modification of alkaline Ca-bentonite with gluconic acid. Effects of modifier （gluconolactone） dosage, reaction temperature and dispersant concentration on the exfoliation degree of gluconic acid montmorillonite （GAM） were studied through single-factor experiments. SEM analysis shows that the exfoliated montmorillonite has the layered structure with the nano-piece thickness of 75-100 nm. DSC analysis indicates that the dehydration temperature of GAM is similar to that of calcium gluconate, and the gluconic groups distribute on the surface of montmorillonite nano-piece. IR analysis indicates that the gluconic acid combines with montmorillonite by chemical bonds. XRD analysis shows that the nanometer sized GAM still has layered structure which is composed of multilayer montmorillonite crystal pieces. Through the discussion of the exfoliation mechanism, it was found that the exfoliation of GAM is caused possibly by the drastic neutralization reaction between the bentonite layers. The experiment shows that, through adding E-GAM into the cassava starch paste （CSP）, the viscosity of CSP can be increased by 100%.