图为乙基纤维素/乙酸乙酯质量比0.8/10时所得乙基纤维素微球的断面结构的SEM照片。从图中可以看出,乙基纤维素微球内部存在大量相互连通的微孔。
The SEM photo shows the sectional structure of the ethyl cellulose microspheres obtained at the mass ratio of ethyl cellulose to ethyl acetate of 0.8/10. It can be seen from the figure that there are a large number of interconnected micropores in the ethyl cellulose microsphere.