A kind of preparation method and application of polymer microsphere

A technology of polymer microspheres and base spheres, applied in ion exchange, ion exchange regeneration, ion exchange treatment devices, etc., can solve the problems of weak retention capacity, unsuitable for large-scale preparation and separation of fullerenes, etc., and achieve high crosslinking degree , easy to control and repeat, and improve the effect of separation efficiency

Active Publication Date: 2016-07-06
SUZHOU NANOMICRO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the stationary phase is mounted on a 150×4.6mm stainless steel column for C 60 and C 70 The retention time is only 2 ~ 4min, indicating that the immobilization is relatively C 60 and C 70 The retention capacity is weak, and it is not suitable for large-scale preparation and separation of fullerenes

Method used

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  • A kind of preparation method and application of polymer microsphere
  • A kind of preparation method and application of polymer microsphere
  • A kind of preparation method and application of polymer microsphere

Examples

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Comparison scheme
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Embodiment 1

[0022] According to the technical scheme disclosed in Chinese invention patent CN101186661, polystyrene microspheres are prepared, which are denoted as UniPS30-300. Weigh 40.00g of polystyrene microspheres (UniPS30-300 microspheres, about 30μm in diameter) as the base ball and 2.00g of iron powder in a dry 500mL three-necked bottle, and then fill the three-necked bottle in turn Stirrer, serpentine condenser and constant pressure funnel, the upper port of the serpentine condenser is connected to the tail gas absorption device, and the absorption liquid is sodium bisulfite solution. First add 300mL of dichloroethane solvent into the three-necked flask, and stir the microspheres evenly, then slowly drop 50mL of bromine into the above suspension solution, the dropwise addition is completed in about 30 minutes, and the three-necked flask is immersed in an ice bath to prevent reaction too violent. During the reaction process of the three-necked bottle, attention should be paid to a...

Embodiment 2

[0028] The reaction device and tail gas absorption are the same as in Embodiment 1. 10.00 g of polystyrene UniPS30-300 microspheres, 0.75 g of anhydrous aluminum chloride and 0.40 g of aluminum powder were weighed in advance in a dry 250 mL three-necked bottle. Add 75mL of carbon tetrachloride solvent to the three-necked flask, and stir the UniPS30-300 microspheres evenly. Finally, 25 mL of bromine chloride was slowly added dropwise to the suspension solution, and the dropwise addition was completed in about 30 minutes. Reaction control and ball washing steps are the same as in Example 1. 20.60 g of dry polymer microspheres were obtained, and the bromine content was 51.46%.

Embodiment 3

[0030] The reaction device and tail gas absorption are the same as in Example 1. In a dry 250mL there-necked bottle, weigh 10.00g of polystyrene UniPS30-300 microspheres, 0.40g of anhydrous aluminum chloride, 0.20g of aluminum powder and 0.50g of anhydrous Phosphorus pentoxide. First add 50mL of chloroform solvent into the three-necked flask, and stir the microspheres evenly. Slowly add 50 mL of bromine to the above suspension solution dropwise, and the dropwise addition is completed in about 30 minutes. Slowly raise the temperature to 35° C. to ensure a stable reaction, and react overnight. The ball washing step is also the same as in Example 1. 21.35 g of dry polymer microspheres were obtained, and the bromine content was 53.16%.

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Abstract

The invention discloses a surface-modified polystyrene polymer microsphere, a preparation method and an application thereof. It uses polystyrene as the base ball, and the surface contains a brominated benzene ring structure with π-π interaction with fullerene. This structure is obtained by replacing the hydrogen atom on the benzene ring contained in the base ball with a bromine atom. The steps are as follows: : Use monodisperse polystyrene microspheres with a particle size of 10-40 μm as the base ball, mix with the catalyst, add an aliphatic halogenated hydrocarbon solvent, and slowly add a brominating agent dropwise under stirring conditions for substitution reaction; the taken out The microspheres are washed and dried to obtain a polymer microsphere, which is used as a liquid chromatography stationary phase for separating fullerenes whose mobile phase is toluene or o-xylene. The surface-modified polystyrene polymer microspheres provided by the invention only need one step for preparation, are simple in process and easy to repeat, are suitable for large-scale production of fullerenes, and have the characteristics of high separation efficiency and good effect.

Description

technical field [0001] The invention relates to a surface-modified polystyrene polymer microsphere, a preparation method and an application thereof. technical background [0002] Fullerene is a general term for hollow spherical, ellipsoidal, cylindrical or tubular molecules composed entirely of carbon, and is the third allotrope of carbon after diamond and graphite [1]. Before the discovery of fullerene, the only allotropes of carbon were graphite, diamond, and amorphous carbon (such as coal ash and carbon). Its discovery greatly expanded the number of allotropes of carbon. Its special structure endows fullerene materials with excellent properties in superconductivity, magnetism, optics, and catalysis. As a typical carbon nano-functional material, fullerene will play an important role in the fields of industry, national defense, energy, scientific research, biomedicine, etc., and has a broad market prospect [2]. This product was included in the National New Material Indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F12/08C08F8/20C08F8/22B01D15/08
Inventor 王永向江必旺陈荣姬吴俊成
Owner SUZHOU NANOMICRO TECH CO LTD
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