选择乙基纤维素－聚乙烯－环己烷体系，利用温度降低后的相分离技术制备水溶性维生素的微胶囊，并对其制备条件进行了优选．对微胶囊的形貌、缓释作用及影响因素进行了讨论 The ethylcellulose-polyethylene-cyclohexane system was selected, the microcapsules of water-soluble vitamins were prepared by phase separation after the temperature was lowered, and the preparation conditions were optimized. The microcapsule morphology, sustained release and influencing factors were discussed