关键词: 高压静电场, 海藻酸钠, 胶珠, 单分散

Abstract: In this paper, the effect of operation parameters on the monodispersity of calcium-alginate gel beads prepared in high-voltage electrostatic field were analyzed.The parameters included the applied potential (U)，the distribution of electrostatic field, the frequency and the flow rate of solution through the capillary. Furthermore, the process is analyzed with the theory of jet break-up in electrostatic field. The result showed that the modified symmetrical electrostatic field was more advantageous in preparing the monodispersed gel beads than the traditional method. Meanwhile,gel beads with good monodispersity(CV<20%) and stability without aggregation were produced under a range of applied potential (U), frequency and flow rate of solution through the capillary.

Key words: 高压静电场, 海藻酸钠, 胶珠, 单分散