LVSEM characterization of MgCl2-supported catalysts and low-yield polymer sample morphology

LVSEM;  catalytic wattle;  topography;  Characterization

Low-pressure scanning electron microscopy (LVSEM) was used to characterize the morphology of MgCl2-supported zjegler-Natta catalyst and very low-yield polypropylene particles.MgCl2 air is very sensitive, and exposure to air for more than ten seconds is enough to affect the morphology of Vitex. LVSEM can obtain high-resolution images at low incident voltages such as l keV. At low incidence voltages, no charge buildup occurs on the sample surface. Therefore, there is no need to spray the sample with a conductive layer. Due to the greatly shortened contact time with air, LVSEM can avoid the interference of air on the morphology of the sample, and become a powerful means to characterize the morphology of Mgcl2 negative planting catalyst.