摘要：以天然辣椒素和硅胶为原料和辅料，制备物理吸附物粉体和物理混合物粉体，采用高效液相色谱、扫描电镜、热重分析、差示扫描量热分析和 X 射线衍射等技术对物理吸附物粉体和物理混合物粉体的物性进行表征。 结果表明，物理吸附物粉体和物理混合物粉体中，天然辣椒素分布均匀；物理混合物粉体的振实密度和松装密度小于物理吸附物粉体的，而压缩度和休止角相反，物理吸附物粉体的流动特性优于物理混合物粉体；物理吸附物粉体和物理混合物粉体的颗粒分布均匀，无团聚现象，粒径为 0.5~8.0 μm；两者热分解温度升高，分解过程发生变化；物理吸附物粉体中天然辣椒素的晶相消失，物理混合物粉体中天然辣椒素以结晶方式存在。 

关键词：天然辣椒素；硅胶；物性

Abstract：Physical adsorbent powders and physical mixture powders were prepared by capsaicin and silica gel as raw materials and accessories. Material properties of physical adsorbent powders and physical mixture powders were characterized by HPLC，SEM，TG，DSC and XRD methods. The results show that capsaicin is even in physical adsorbent powders and physical mixture powders. Tap density and apparent density of physical mixture powders are smaller than those of physical adsorbent powders， while the degree of compression and the angle of repose are on the contrary. Flow characteristics of physical adsorbent powders were better than that of physical mixture powders. Particles size of physical adsorbent powders and physical mixture powders is well-distributed and has no agglomeration. The sizes of the particles are 0.5 －8.0 μm. Decomposition temperature of physical adsorbent powders and physical mixture powders is improved. The process of decomposition has changes. The crystal form of capsaicin disappears in physical adsorbent powders，and capsaicin exists in crystalline form in physical mixture powders. 

Keywords：capsaicin；silica gel；material property