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Method for preparing nano aluminum oxide material modified polymer integral column

A nano-alumina and monolithic column technology, applied in chemical instruments and methods, and other chemical processes, can solve the problems of reduced separation efficiency, poor mechanical strength, and analytical application limitations, and achieve simple preparation methods, stable material properties, and improved The effect of separation efficiency

Inactive Publication Date: 2013-08-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has disadvantages such as easy swelling, poor mechanical strength, and easy deformation when heated, which leads to uneven distribution of functional groups on the surface of the monolithic column material, resulting in reduced separation efficiency, and is limited in analytical applications.

Method used

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  • Method for preparing nano aluminum oxide material modified polymer integral column
  • Method for preparing nano aluminum oxide material modified polymer integral column
  • Method for preparing nano aluminum oxide material modified polymer integral column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) The functional monomer glycidyl methacrylate, the crosslinking agent ethylene dimethacrylate, the porogen methanol, and the initiator azobisisobutyronitrile are 30.0:70.0:260.0:1.0 according to the mass ratio Mix and stir evenly, inject into silanized quartz capillary, seal, thermally initiate polymerization reaction at 65°C, rinse thoroughly with methanol after completion, and obtain poly(glycidyl methacrylate-ethylene dimethacrylate ester) monolithic column.

[0021] (2) Disperse nano-alumina in a sodium hydroxide solution with a concentration of 0.035mol / L, the concentration of nano-alumina in the sodium hydroxide solution is 4.5mg / mL, and then add nano-alumina-sodium hydroxide solution Excessive injection of poly(glycidyl methacrylate-ethylene dimethacrylate) monolithic column, sealing both ends, heat-initiated polymerization reaction at 65°C, fully rinsed with methanol after completion, to obtain nano-alumina Poly(glycidyl methacrylate-ethylene dimethacrylate)...

Embodiment 2

[0023] (1) The functional monomer glycidyl methacrylate, the crosslinking agent ethylene dimethacrylate, the porogen methanol, and the initiator azobisisobutyronitrile are in a mass ratio of 36.3:63.7:300.0:1.0 Mix and stir evenly, inject into silanized quartz capillary, seal, thermally initiate polymerization reaction at 60°C, rinse thoroughly with methanol after completion, and obtain poly(glycidyl methacrylate-ethylene dimethacrylate ester) monolithic column.

[0024] (2) Disperse the nano-alumina in the sodium hydroxide solution with a concentration of 0.015mol / L, the concentration of the nano-alumina in the sodium hydroxide solution is 5.0mg / mL, and then the nano-alumina-sodium hydroxide solution Excessive injection of poly(glycidyl methacrylate-ethylene dimethacrylate) monolithic column, sealing both ends, heat-initiated polymerization reaction at 60°C, fully rinsed with methanol after completion, to obtain nano-alumina Materials Modified poly(glycidyl methacrylate-ethy...

Embodiment 3

[0026] (1) The functional monomer glycidyl methacrylate, the crosslinking agent ethylene dimethacrylate, the porogen methanol, and the initiator azobisisobutyronitrile are 40.0:60.0:360.0:5.0 according to the mass ratio Mix and stir evenly, inject into silanized quartz capillary, seal, thermally initiate polymerization reaction at 70°C, rinse thoroughly with methanol after completion, and obtain poly(glycidyl methacrylate-ethylene dimethacrylate ester) monolithic column.

[0027] (2) Disperse nano-alumina in a sodium hydroxide solution with a concentration of 0.055mol / L, the concentration of nano-alumina in the sodium hydroxide solution is 5.5mg / mL, and then add nano-alumina-sodium hydroxide solution Excessively inject poly(glycidyl methacrylate-ethylene dimethacrylate) monolithic column, seal both ends, heat-initiate polymerization reaction at 70°C, and fully rinse with methanol after completion to obtain nano-alumina Materials Modified poly(glycidyl methacrylate-ethylene di...

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Abstract

The invention relates to a method for preparing a nano aluminum oxide material modified polymer integral column. The method comprises the following steps of: mixing and stirring a functional monomer, a cross linking agent, pore-foaming agents and initiators uniformly by taking glycidyl methacrylate as a functional monomer and taking ethylidene dimethyl acrylic ester as a cross linking agent; pouring into a silylanization quartz capillary, and carrying out polymerization reaction by thermal initiation; flushing with methyl alcohol fully, thereby obtaining a polymer integral column; pouring a nanometer aluminum oxide-sodium hydroxide solution into an integral column, carrying out polymerization reaction by thermal initiation, and flushing with methyl alcohol fully, thereby preparing a nano aluminum oxide material modified polymer integral column. The integral column prepared by the invention has the advantages of both an organic integral column and nano materials; the preparation method is simple and reliable; the materials have stable performances and good permeability; the introduction of the nano materials is beneficial to improving the separation efficiency, is very suitable for analyzing azo-type of pigments of tony red and the like in beverage samples, and has a great application potential in the field of organism separation and solid phase extraction.

Description

Technical field: [0001] The invention belongs to the technical field of preparation methods of capillary monolithic columns, in particular to a preparation method of polymer monolithic columns modified by nano-alumina materials. Background technique: [0002] With the continuous advancement of science and technology, modern analytical instruments have been greatly improved in terms of analytical sensitivity and selectivity. However, the analytical objects faced by analytical chemistry are becoming more and more complex, and complex samples usually require separation and enrichment before analysis. . New separation and enrichment methods emerge in endlessly. Among them, the polymer monolithic column appeared in the 1990s. It has good stability, wide selection of materials, wide pH range, simple preparation, low column pressure, fast mass transfer, and easy modification. Advantages, widely used in material separation, enzyme reactors and catalytic media. [0003] At present,...

Claims

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Application Information

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IPC IPC(8): B01J20/285B01J20/30
Inventor 贾琼李婉君刘丹祁瑞芳郑海娇周绍岩
Owner JILIN UNIV
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