高压静电场制备微胶囊的研究

在自行研制的高压静电成囊装置上进行了制备微胶囊的试验研究。以海藻酸钠在氯化钙中固化成囊方法，进行了平针头与斜针头的成囊电压，跳火电压对比试验研究，得出平针头优于斜针头的结果；分析了电压、推进速度、液面距等参数变化对制成的微胶囊直径和均匀度的影响；对于１．５％的海藻酸钠溶液和７＾＃平针头，得到满足胰岛细胞团胶囊化要求的较佳参数组合为电压５ｋＶ，推进速度５０ｍｍ／ｈ，液面距２０ｍｍ。

Study on preparing microcapsule in high-voltage electrostatic field

A high voltage static electricity system used for preparing microcapsule is designed. The contrast experimental researches on the encystation voltage and the jump-spark voltage of flat pinhead and inclined pinhead are carried out. Parameters such as voltage, push speed of solution, distance between pinhead and surface of CaCl2 solution which are of influence on the diameter size and the uniformity of microencapsules are analyzed. The conclusions are that the flat pinhead is better than inclined pinhead, and the optimized parameters combination is 5kV voltage, 50mm/h push speed of solution and 20mm distance from solution surface.