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粉体表面改性技术改善中药浸膏粉流动性的研究

Keywords: 中药浸膏粉,表面改性,Comil粉碎整粒机,流动性

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Abstract:

该研究应用粉体表面改性技术改善中药浸膏粉的流动性。应用Comil粉碎整粒机,将1%的纳米SiO2对7种中药浸膏粉进行表面改性处理。采用粉体流动性测试仪,比较改性处理前后各浸膏粉的流动性变化,利用扫描电镜(SEM)观察各浸膏粉的微观表面形态变化,借助显微镜测定并比较各浸膏粉的粒径分布变化,并对改性前后的浸膏粉进行吸湿性研究。结果表明,表面改性处理后,各浸膏粉的休止角、抹刀角、压缩度、黏附度均明显降低,流动性指数增加,流动性得到显著性提高,以葛根浸膏粉和大黄浸膏粉改善最为显著,扫描电镜观察显示改性后的浸膏粉表面均附着有纳米SiO2,而改性前后的浸膏粉的粒径和吸湿性均无明显变化。该技术可为改善中药浸膏粉流动性提供新的解决途径。

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