[1]Zheng Xuejing,JOACHIM LOOS..LVSEM characterization of MgCl2-supported catalysts and low-yield polymer sample morphology[J].Journal of Zhengzhou University (Engineering Science),2008,29(04):47-50.[doi:10.3969/j.issn.1671-6833.2008.04.011]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
29卷
Number of periods:
2008年04期
Page number:
47-50
Column:
Public date:
1900-01-01
- Title:
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LVSEM characterization of MgCl2-supported catalysts and low-yield polymer sample morphology
- Author(s):
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Zheng Xuejing; JOACHIM LOOS.
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- Keywords:
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- CLC:
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- DOI:
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10.3969/j.issn.1671-6833.2008.04.011
- Abstract:
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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.