摘要
以天然蒙脱土为原料,分别利用阳离子和阴-阳离子改性剂对其进行改性,对改性后的有机蒙脱土进行了表征:IR结果证明有机改性剂已进入了蒙脱土层间,XRD结果表明有机蒙脱土的层间距得到了不同程度的扩增.研究表明,阴-阳离子混和改性剂优于单一的阳离子改性剂,改性剂量不超过1.0 CEC时,蒙脱土层间距由1.538 nm分别扩增到2.643 nm和2.373nm;并对其作用机制进行了详细探讨,为蒙脱土的有机改性提供了新的思路和参考.
The crude montmorillonite was modified with cation and anion-cation modifier. IR result indicates the organic modifier has intercarated into the layers of montmorillonite, and XRD result shows the spacing of montmorillonite layer was broadened distinctly. When the quantity of anion-cation and cation modifier is no more than 1.0 CEC, the spacing of montmorillonite layer has increased from 1. 538 nm to 2. 643 nm and 2. 373 nm,therefore the effect of anion-cation modifier is better. In order to give some new thought and reference, the mechanism of organic modifier and montmorillonite was amply discussed.
出处
《陕西科技大学学报（自然科学版）》
2008年第6期7-12,共6页
Journal of Shaanxi University of Science & Technology
基金
陕西省自然科学基金(2002B16)
关键词
蒙脱土
有机改性
作用机制
层间距
montmorillonite
organic modification
mechanism
spacing of layer
