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Micron-sized sulfonated polystyrene microspheres as well as preparation method and application thereof

A technology of sulfonated polystyrene and polystyrene microspheres, which is applied in the field of adsorption materials, can solve problems such as limited effect, slow adsorption speed, and small exchange capacity, and achieve fast processing speed, high sulfonation degree, and large capacity Effect

Inactive Publication Date: 2018-01-09
广东华凯明信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, heavy metals in drinking water are mainly treated by millimeter-level activated carbon, ion exchange resin and other methods, which have problems such as slow adsorption speed, small exchange capacity and limited effect.

Method used

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  • Micron-sized sulfonated polystyrene microspheres as well as preparation method and application thereof
  • Micron-sized sulfonated polystyrene microspheres as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 2g of PVP-30 into a three-necked flask containing 200mL of absolute ethanol, ultrasonically disperse, stir, and protect with nitrogen, raise the temperature to 75°C, add 50mL of styrene, 0.4g of azobisisobutyronitrile, and stir Under the condition of reaction for 24 hours, the obtained polymer microspheres were washed with absolute ethanol for more than three times, and vacuum-dried at 60° C. for 24 hours to obtain PS microspheres.

[0029] (2) Add PS into concentrated sulfuric acid according to the ratio of PS microspheres to concentrated sulfuric acid: 1:40g / mL, and react at 40°C for 24 hours under mechanical stirring. After vacuum drying at ℃ for 12 hours, powdered milky white micron-sized sulfonated polystyrene microspheres were obtained.

[0030] Gained micron-order sulfonated polystyrene microspheres are subjected to scanning electron microscope testing, and the results are as follows: figure 1 shown. Depend on figure 1 As a result, it can be seen that ...

Embodiment 2

[0032] (1) Add 0.8g of PVP-30 into a three-necked flask containing 200mL of absolute ethanol, ultrasonically disperse, stir, and protect with nitrogen, raise the temperature to 70°C, add 50mL of styrene, 0.5g of azobisisobutyronitrile, After reacting for 20 hours under stirring conditions, the obtained polymer microspheres were washed with absolute ethanol for more than three times, and vacuum-dried at 50° C. for 24 hours to obtain PS microspheres.

[0033] (2) Add PS into concentrated sulfuric acid according to the ratio of PS microspheres to concentrated sulfuric acid: 1:30g / mL, and react at 60°C for 20h under mechanical stirring. After vacuum drying at ℃ for 12 hours, powdered milky white micron-sized sulfonated polystyrene microspheres were obtained.

Embodiment 3

[0035] (1) Add 1.5g of PVP-30 into a three-necked flask containing 200mL of absolute ethanol, ultrasonically disperse, stir, and protect with nitrogen, raise the temperature to 68°C, add 50mL of styrene, 0.2g of azobisisobutyronitrile, After reacting for 20 hours under stirring conditions, the obtained polymer microspheres were washed with absolute ethanol for more than three times, and vacuum-dried at 50° C. for 24 hours to obtain PS microspheres.

[0036] (2) Add PS into concentrated sulfuric acid according to the ratio of PS microspheres to concentrated sulfuric acid: 1:30g / mL, and react at 60°C for 12h under mechanical stirring. After vacuum drying at ℃ for 12 hours, powdered milky white micron-sized sulfonated polystyrene microspheres were obtained.

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Abstract

The invention belongs to the technical field of adsorbing materials and discloses micron-sized sulfonated polystyrene microspheres as well as a preparation method and an application thereof. The preparation method comprises steps as follows: styrene monomers, a dispersing agent and an initiator are added to absolute ethyl alcohol, a mixture is heated to 65-78 DEG C and subjected to a reaction for10-24 h, solid products are washed and dried, and polystyrene microspheres are obtained; the polystyrene microspheres are added to concentrated sulfuric acid and subjected to a sulfonation reaction for 8-24 h at the temperature of 30-80 DEG C, reaction products are washed and dried, and the micron-sized sulfonated polystyrene microspheres are obtained. Sulfonic acid groups are introduced into surfaces of the polystyrene microspheres for preparation of the micron-sized sulfonated polystyrene microspheres, particle sizes of the microspheres are uniform, and the micron-sized sulfonated polystyrene microspheres have the characteristics of high adsorption capacity, high treatment speed and the like for heavy metal ions in water.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to a micron-sized sulfonated polystyrene microsphere and a preparation method and application thereof. Background technique [0002] Among many micron materials, polystyrene microspheres have attracted much attention due to their high rigidity, high mechanical strength, acid and alkali resistance, and stable chemical properties. Among them, the raw material styrene is rich in resources and low in price, and polystyrene microspheres have properties such as large specific surface area, uniform particle size and controllability. The preparation methods of polystyrene microspheres are generally divided into dispersion polymerization, seed polymerization, and emulsion polymerization. Among them, the preparation of polystyrene microspheres by seed polymerization is cumbersome and requires secondary swelling. However, the polystyrene prepared by this method The pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F8/36C08F2/20C02F1/28C02F101/20
Inventor 肖凯军龚斌余永进董浩何家鹏李华玉
Owner 广东华凯明信科技有限公司
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