二次插层法制备有机蒙脱石的研究

Preparation of organic-intercalated montmorillonite by two-step intercalation

用甲基丙烯酰氧乙基三甲基氯化铵和十六烷基三甲基溴化铵作为插层剂,采取二次插层法制备了有机化蒙脱石,并对一次插层法和二次插层法的效果进行了比较,结果表明,经过二次插层反应后,蒙脱石的层间距从1nm左右增大至3nm,有利于有机分子的进入和形成新的蒙脱石有机复合物。

The twice intercalation method to prepare organic-intercalated montmonllonites with dimethylacetamide (DMC) and cetyltrimethylammonium bromide (CTAB) as intercalating agents was introduced and compared with the once intercalation method. It showed that the interlayer distance of montmorillonite enlarged from about 1 nm to 3 nm or so after twice intercalation, which made the organic molecules easily to enter and form new montmorillonite/polymer composite.