Surface modification of sub-micron spherical SiO2 particles with butanedioic acid for electrophoresis in tetrachloroethylene
| Autor: | Xiufeng Wang, Bing Cheng, Yuanting Wu, Liesong Wang |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Tetrachloroethylene Analytical chemistry Infrared spectroscopy Condensed Matter Physics chemistry.chemical_compound Electrophoresis X-ray photoelectron spectroscopy chemistry Mechanics of Materials Zeta potential Surface modification General Materials Science Fourier transform infrared spectroscopy |
| Zdroj: | Materials Letters. 61:1350-1353 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2006.07.066 |
| Popis: | Sub-micron spherical SiO2 particles were prepared by co-precipitation process, and further surface modification of the SiO2 particles by butanedioic acid (BA) for charging and electrophoresis in tetrachloroethylene was attempted. The obtained composites were characterized by Fourier-transform infrared spectra (FTIR), X-ray Photoelectron Spectrometer (XPS), scanning electron microscope (SEM) and Zetasizer. FTIR and XPS results indicate that the chemical bonding by esterification between BA and SiO2 particles was achieved. SEM measurement shows that the modified SiO2 particles are spherical and about 250 nm and are dispersed into tetrachloroethylene stably. Zetasizer results reveal that the Zeta potential of the modified SiO2 particles in tetrachloroethylene medium was − 27.84 mv, which was much higher than that of the unmodified SiO2 particles. |
| Databáze: | OpenAIRE |
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