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学科主题: 药学
题名:
Studies on a poly(styrene-divinylbenzene)-encapsulated sub-micrometer sized organic-inorganic hybrid silica packing, its synthesis, some of its characteristics and applications
作者: Li, YS; Li, B; Han, NY; Xu, BJ
关键词: stationary phases ; CEC ; organic-inorganic hybrid silica ; poly(styrene-divinylbenzene)
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2003-12-22
DOI: 10.1016/j.chrorna.2003.09.011
卷: 1021, 期:1-2, 页:183-189
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Biochemical Research Methods ; Chemistry, Analytical
研究领域[WOS]: Biochemistry & Molecular Biology ; Chemistry
关键词[WOS]: PHASE LIQUID-CHROMATOGRAPHY ; CAPILLARY ELECTROCHROMATOGRAPHY ; STATIONARY-PHASE ; MONODISPERSE ; ZIRCONIA ; SPHERES
英文摘要:

The hydrolyzed product of a mixture of tetraethoxysilane (TEOS) and vinyltriethoxysilane (VTEOS) was used to produce organic-inorganic hybrid silica by sol-gel processing. The product was a kind of composite with vinyl groups incorporated into the structure of the final particles through C-Si bonds. These hybrid silica particles were spherical and the average diameter was about 350 nm as measured by scanning electron microscopy (SEM). The particles were non-porous as proved by BET method.

The hybrid silica particles were subsequently encapsulated with a layer of PS-DVB, a polymeric mixture of styrene and divinylbenzene, with the vinyl groups on the particle surface as anchors of the polymer chains. The encapsulated packing was used as stationary phases in CEC, and the chromatographic behaviors were studied. Experimental results showed that, as expected, the smaller diameter stationary phase resulted in higher column efficiencies. In comparison with the columns packed with 5 mum diameter encapsulated-silica stationary phases of the same kind and other sub-micron stationary phases reported, it can be concluded that the EOF velocity is independent of the particle diameter when using 350 nm phase, but determined by the surface nature of the stationary phase. (C) 2003 Elsevier B.V. All rights reserved.

语种: 英语
WOS记录号: WOS:000187662500018
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/67619
Appears in Collections:北京大学药学院_期刊论文

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作者单位: Peking Univ, Sch Pharmaceut Sci, Dept Analyt Chem, Beijing 100083, Peoples R China

Recommended Citation:
Li, YS,Li, B,Han, NY,et al. Studies on a poly(styrene-divinylbenzene)-encapsulated sub-micrometer sized organic-inorganic hybrid silica packing, its synthesis, some of its characteristics and applications[J]. JOURNAL OF CHROMATOGRAPHY A,2003,1021(1-2):183-189.
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