药用矿物蒙脱石的X-射线定向衍射分析

X-ray diffraction analysis on montmorillonite clay mineral

目的 揭示蒙脱石层状晶体结构及层间吸附和膨胀性能 ,为其作为药物和药剂辅料提供科学依据。方法 将样品提纯 ,获得粒径小于 1μm的胶体 ,制成取向样品 ,进行 X-射线定向衍射分析。结果 得到了有关蒙脱石层间域在不同条件下的变化规律。结论 蒙脱石的层间吸附是可能的 ,而且定向衍射方法可以定量测定其层间距离。

Object To investigate the properties of layer crystal structure and its interlayer absorption and expansibility in montmorillonits clay lattice, which provide a basis for the montmorillonite as medicine adjuvant.Methods Montmorillonite sample was separated and purified from clay minerals, and the diameter of particle was less than 1 μm in colloid, the setting film sample was ready-made, and the samples were analyzed with X-ray diffraction.Results The information of interlayer change pattern on montmori-llonite clay was obtained with different conditions.Conclusion Montmorillonite as swelling and adsorption clay minerals and form an interlayer absorption is possible and the X-ray diffraction can determine the amounts of layer distance.