利用溶液插层方法成功制备了不同载药量的辣椒素(Capsaicin,CAP)/有机蒙脱土(OMMT)复合物.通过X射线衍射(XRD)、红外吸收光谱(FTIR)、热重分析(TGA)对复合物的插层结构、相互作用及其热稳定性进行了分析.结果表明,载药后蒙脱土层间距由1.9nm增加到3.7nm,即形成了辣椒素/蒙脱土纳米插层结构,并且该复合物有效地提高了辣椒素的热稳定性,使辣椒素的热分解温度升高到240℃.从药物体外释放实验结果可知,复合物的药物缓释时间为48 h,对辣椒素具有明显的药物缓释效果.这种辣椒素/有机蒙脱土长效抗菌复合材料有望作为抗菌塑料添加剂.
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