The morphology of St/BVA/BA polymer microgel with core shell structure was characterized by TEM and DSC and the stability of Ca 2+ , dilute and freezing were tested.

• 对半连续法制备的核壳结构微凝胶进行了结构表征及 Ca2 + 稳定性、稀释稳定性、冻融稳定性等性能测试