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Preparation method of crosslinked polystyrene resin microspheres with narrow particle size distribution

A technology for cross-linked polystyrene and resin microspheres, applied in the field of preparation of cross-linked polystyrene resin microspheres, can solve problems such as high price, and achieve the effects of simple operation, easy mass industrial production and simple operation process

Active Publication Date: 2013-02-20
日照金慧科技信息咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

20-350 μm polymer microspheres are urgently needed primary raw materials for the preparation of chromatographic packing and solid-phase extraction column packing in China. At present, there is still a lack of simple and effective preparation technology in China to prepare resin microspheres within this particle size distribution range. The applied Solid-phase extraction column fillers and industrial preparation chromatographic fillers rely on imports, which are expensive

Method used

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  • Preparation method of crosslinked polystyrene resin microspheres with narrow particle size distribution
  • Preparation method of crosslinked polystyrene resin microspheres with narrow particle size distribution
  • Preparation method of crosslinked polystyrene resin microspheres with narrow particle size distribution

Examples

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Embodiment 1

[0032] Example 1 A preparation method of cross-linked polystyrene resin microspheres with narrow particle size distribution

[0033] 1) Pretreatment: wash styrene and divinylbenzene three times with 20% NaOH aqueous solution respectively, and then wash three times with deionized water for later use;

[0034] 2) According to the weight ratio of styrene and crosslinking agent 80:20, after mixing 4g styrene, 1g crosslinking agent divinylbenzene and 2.5g porogen toluene, add 0.2g initiator azobisisobutyl Nitrile, fully dissolved to obtain liquid A;

[0035] 3) Add the dispersant gelatin and the surfactant OP-10 into water and dissolve completely to obtain liquid B. The concentration of gelatin in the liquid B is 3 g / L, and the concentration of OP-10 is 1.0 g / L;

[0036] 4) Add liquid A to liquid B to obtain a mixed liquid, then add alcohol solvent ethanol to the mixed liquid, control the volume ratio of ethanol and the mixed liquid to 10:90, stir at a speed of 900 rpm, and heat...

Embodiment 2

[0040] Example 2 A preparation method of cross-linked polystyrene resin microspheres with narrow particle size distribution

[0041] 1) Pretreatment: wash styrene and divinylbenzene three times with 20% NaOH aqueous solution respectively, and then wash three times with deionized water for later use;

[0042] 2) According to the weight ratio of styrene and crosslinking agent 80:20, after mixing 4g styrene, 1g crosslinking agent divinylbenzene and 2.5g porogen xylene, add 0.2g initiator benzyl peroxide acyl, fully dissolved to obtain liquid A;

[0043] 3) Add dispersant gelatin and surfactant AEO-9 into water and dissolve completely to obtain liquid B. The concentration of gelatin in liquid B is 3 g / L, and the concentration of AEO-9 is 1.0 g / L;

[0044] 4) Add liquid A to liquid B to obtain a mixed liquid, then add alcohol solvent n-propanol to the mixed liquid, control the volume ratio of n-propanol and mixed liquid to 10:90, stir at 900 rpm, and react During the process, t...

Embodiment 3

[0047] Example 3 A preparation method of cross-linked polystyrene resin microspheres with narrow particle size distribution

[0048] 1) Pretreatment: wash styrene and divinylbenzene three times with 20% NaOH aqueous solution respectively, and then wash three times with deionized water for later use;

[0049] 2) According to the weight ratio of styrene and crosslinking agent 90:10, after mixing 9g styrene, 1g crosslinking agent divinylbenzene and 2.0 g porogen toluene, add 0.3 g initiator azobisisobutyl Nitrile, fully dissolved to obtain liquid A;

[0050] 3) Add the dispersant gelatin and the surfactant OP-10 into water and dissolve completely to obtain liquid B. The concentration of gelatin in the liquid B is 4 g / L, and the concentration of OP-10 is 1.0 g / L;

[0051] 4) Add liquid A to liquid B to obtain a mixed liquid, then add alcohol solvent ethanol to the mixed liquid, control the volume ratio of ethanol and the mixed liquid to 30:70, stir at a speed of 900 rpm, and he...

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Abstract

The invention relates to a preparation method of crosslinked polystyrene resin microspheres with narrow particle size distribution. The technical scheme is as follows: the preparation method comprises the following steps: evenly mixing styrene, crosslinking agent, pore-forming agent and initiator to obtain a solution A; dissolving dispersant and surfactant in water to obtain a solution B; adding the solution A into the solution B to obtain a mixed solution, adding an alcohol solvent, and mixing the alcohol solvent and the mixed solution in a volume ratio of (10-30):(90-70) at 800-1200rpm to react for 4-5 hours at 75-85 DEG C (the temperature is raised in the reaction process), thereby obtaining a reaction solution containing the crosslinked polystyrene resin microspheres; and removing the supernatant by pouring, collecting the resin microspheres, washing with water, and eluting with ethyl acetate to obtain the finished product. The particle sizes of the crosslinked polystyrene resin microspheres are adjustable within the range of 53-350 micrometers; the sphericity is higher than 95%; and the preparation method is simple, and can easily implement industrialized mass production.

Description

Technical field [0001] The present invention involves the preparation of cross -linked polystyrene resin microspheres, especially the preparation method of cross -linking polystyrene resin microspheres with narrow particle size distribution.The particle size range of the prepared cross-linked polystyrene resin is mainly 53-350 microns.The control conditions can make the particle size distribution of the microspheres within the above range. Background technique [0002] The narrow -particle size distribution of the cross -linked polystyrene resin micro -ball refers to the cross -linked polystyrene polymer resin microsphere with a relatively uniform diameter of the resin.Use this resin microsphere to further prepare resin microspheres with ion exchange, chelation, adsorption function, etc.It can be applied in the fields of biology, medicine, food, analysis of chemistry, functional materials. [0003] The preparation methods of resin microspheres include lotion aggregation, decentra...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F2/20C08J9/28
Inventor 葛春华邢杨关宏宇张向东李宏图
Owner 日照金慧科技信息咨询有限公司
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