关键词:

微胶囊化, 微流体数字化, 微喷嘴, 微系统

Abstract:

A new method of preparing monodisperse microcapsules was proposed on the basis of digitalization of microfluids technology.By employing this method, the microcapsule material was divided into micro-droplets, digitally transported and jetted by means of disturbing micropipette with controllable pulse inertial force.In the experiments, sesame oil was microencapsulated with sodium alginate.In the process of microencapsulation, every disturbing pulse produced a single emulsion-solvent droplet.The rhythm of microencapsulation could be either sequential or encoded, therefore the process of microencapsulation could be effectively controlled.By changing the inside diameter of the micropipette, standardized microcapsules of different micron scale sizes were produced, and the size distribution was narrow.The number of microcapsules could be calculated by counting the time.

Key words:

微胶囊化, 微流体数字化, 微喷嘴, 微系统