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Preparation method for novel ionic liquid capillary monolithic column

A capillary monolithic column and ionic liquid technology, applied in separation methods, chemical instruments and methods, solid adsorbent liquid separation, etc., to achieve the effects of easy control of reaction conditions, low cost, and good pore size characteristics

Active Publication Date: 2013-05-01
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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Problems solved by technology

However, only a few positively charged monolithic stationary phases have been developed, especially positively charged organic capillary monolithic columns

Method used

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Embodiment Construction

[0014] Below in conjunction with embodiment, the present invention is further described; Following embodiment is illustrative, not limiting, can not limit protection scope of the present invention with following embodiment.

[0015] The invention uses the ionic liquid as a functional monomer and utilizes in-situ thermal polymerization technology to prepare a novel organic capillary monolithic column. Its specific embodiment is:

[0016] A method for preparing a novel ionic liquid capillary monolithic column, characterized in that: the steps of the preparation method are:

[0017] (1). Functional monomer chlorinated 1-vinyl-3-octyl imidazole (ViOcIm + Cl - ) synthesis: 1-chlorooctane (11.90 g, 80 mmol) was added dropwise into 1-vinylimidazole (4.00 g, 42.5 mmol). The mixture was heated to 70°C, and stirred with magnetic force for 24 hours. The solution phase separated, and the lower viscous yellow liquid was washed repeatedly with ethyl acetate. The resulting material was ...

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Abstract

The invention relates to a preparation method for a novel ionic liquid capillary monolithic column. Main technical points of the invention are as follows: ionic liquid chlorinated 1-vinyl-3-octylimidazolium and lauryl methacrylate are used as binary functional monomers, ethylene glycol dimethacrylate is used as a cross-linking agent, 1,4-butylene glycol and methanol are used as binary pore forming agents, and the novel capillary monolithic column is prepared by using in situ thermopolymerization technology. The preparation method provided by the invention has the advantages of low cost, a simple synthesis process and easily controllable reaction conditions; the prepared novel capillary monolithic column has high mechanical strength, is applicable to a buffer solution with a wide pH value scope of 2.0 to 12.0 and can be used for fractionation detection of a benzene series, thiourea and analogues thereof and amino acid on capillary electrochromatography.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of a novel ionic liquid capillary monolithic column. Background technique [0002] High-efficiency capillary electrochromatography is a new type of micro-separation technology. Its column efficiency and selectivity are superior to high-performance liquid chromatography. Therefore, it has developed rapidly in recent years and has been widely used. As its core system, capillary column not only serves as its separation medium but also provides driving force for mobile phase. Compared with packed columns and open-tubular columns, capillary monolithic columns are widely used due to their simple preparation, unique characteristics and good applicability. According to the chemical properties of monolithic materials, it can be divided into organic monolithic columns and silica monolithic columns. The organic monolithic column has good biocompatibility, wi...

Claims

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Application Information

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IPC IPC(8): B01D15/22
Inventor 王硕邓启良王俊平汪羽
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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