摘要
研究了静电场中两种不互溶流体同轴喷雾的行为特点。由实验得出静电场中两种不互溶流体同轴喷雾的较佳工艺条件为:电压8000V,外流体流速1.8ml/h,内流体流速1.8ml/h,内喷头直径0.7mm。采用该技术制备了海藻酸钠-氯化钙包裹的儿茶素微胶囊,该微胶囊最小粒径可达30μm,具有一定的缓释效果,表明该技术具有广阔的应用前景。
An experimental investigation on the electrified co-axial jets of two immisicible liquids issuing from a structured Taylor cone has been carried out. The suitable condition to produce the microcapsule is found through the experiment ：the electrical potential is 8kV, the inner diameter of inner needle is 0.7mm,the flow rate of inner and outer is 1.8ml/h.The catechin microcapsules with the wall materials of alginate-calcium chloride were prepared with this technology, The microcapsules can be released controlled and the minimum diameter is around 30μm.
关键词
静电场
不互溶流体
同轴喷雾
微胶囊
electrostatic field
co-axial jets
two immisicible liquids
microcapsule
