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Polar polymer microparticles, preparation method and use thereof

A polar polymer and micro-particle technology, applied in the directions of alkali metal compounds, chemical instruments and methods, water pollutants, etc., can solve the problems of high salinity, high concentration of organic chemical wastewater, difficult biodegradation of pollutants, etc., and achieve adsorption Large capacity, improved mass transfer efficiency, and the effect of increasing adsorption capacity

Inactive Publication Date: 2021-07-13
SHANDONG WANDA CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic chemical wastewater has high concentration, high salinity, and difficult biodegradation of pollutants, which are the difficulties of water pollution control

Method used

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  • Polar polymer microparticles, preparation method and use thereof
  • Polar polymer microparticles, preparation method and use thereof
  • Polar polymer microparticles, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method for polar polymer microparticles, comprising the steps of:

[0030] 1) Prepare maleic anhydride, N-vinylpyrrolidone and vinyl ether in a molar ratio of 1:0.5-2:1;

[0031] 2) According to the solid-to-liquid ratio of 1:5-8 (g / mL), add maleic anhydride and organic solvent into the reaction vessel, and stir until MA is completely dissolved to form a clear and transparent homogeneous solution;

[0032] 3) Add N-vinylpyrrolidone, vinyl ether and initiator into the reaction vessel, pass nitrogen to empty, and mix uniformly to obtain a polymerization reaction system. The mass fraction of the initiator in the polymerization reaction system is 1-5%. When the mass fraction of the initiator is When the fraction is less than 1%, monodisperse microspheres cannot be obtained, but only some small random particles can be obtained. As the concentration of the initiator increases, the yield of the microspheres gradually increases. When the mass fraction of the initi...

Embodiment 2

[0040] A preparation method for polar polymer microparticles, comprising the steps of:

[0041] 1) Prepare maleic anhydride, N-vinylpyrrolidone and vinyl ether in a molar ratio of 1:1.2:1;

[0042] 2) According to the solid-to-liquid ratio of 1:6 (g / mL), add maleic anhydride and tetrahydrofuran into the three-necked flask, and stir until the MA is completely dissolved to form a clear and transparent homogeneous solution;

[0043] 3) Add N-vinylpyrrolidone, vinyl ether and lauroyl peroxide into the reaction vessel, pass nitrogen to empty, and mix uniformly to obtain a polymerization reaction system. The mass fraction of lauroyl peroxide in the polymerization reaction system is 1.5%;

[0044] 4) The temperature of the polymerization reaction system was raised to 65°C within 30 minutes, and the reaction was stirred at a stirring speed of 500 rpm for 4 hours to undergo a polymerization reaction. After the reaction was completed, it was filtered, washed, and dried to obtain P(MA-DE...

Embodiment 3

[0046] A preparation method for polar polymer microparticles, comprising the steps of:

[0047] 1) Prepare maleic anhydride, N-vinylpyrrolidone and vinyl ether in a molar ratio of 1:1.2:1;

[0048] 2) According to the solid-to-liquid ratio of 1:6 (g / mL), add maleic anhydride and tetrahydrofuran into the three-necked flask, and stir until the MA is completely dissolved to form a clear and transparent homogeneous solution;

[0049] 3) Add N-vinylpyrrolidone, vinyl ether, lauroyl peroxide, hydroxyapatite and a-amino acid into the reaction vessel, pass nitrogen to empty, mix well to obtain a polymerization reaction system, and lauroyl peroxide in the polymerization reaction system The mass fraction of α-amino acid is 0.15%, the mass fraction of hydroxyapatite is 0.06%, and the mass fraction of a-amino acid is 1.5%;

[0050] 4) The temperature of the polymerization reaction system was raised to 65°C within 30 minutes, and the reaction was stirred at a stirring speed of 500 rpm for...

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Abstract

The invention provides a polar polymer microparticle, a preparation method and its use, and belongs to the technical field of polymer synthesis. The preparation method comprises the following steps: mixing maleic anhydride, N-vinylpyrrolidone, vinyl ether and an initiator in an organic solvent Mix uniformly in the mixture to obtain a polymerization reaction system, a polymerization reaction occurs under stirring, after the reaction is completed, filter, wash, and dry to obtain the polar polymer microparticles, namely P(MA‑DE‑NVP) microparticles. The preparation method of the invention is simple and easy, has high yield, can increase the softness of the surface of the microparticles, and makes the microparticles easier to swell and modify. The microparticles of the present invention have hydrophilicity, high specific surface area and adsorption capacity, the particle size of the microparticles is small, the particle size distribution is narrow, and the adsorption capacity for hydrophilic substances is large, which can be used for the removal of organic pollutants in water bodies. Adsorption and separation.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and specifically relates to polar polymer microparticles, a preparation method and an application thereof. Background technique [0002] With the development of industry in recent years, especially the rapid development of production industries such as organic chemical industry, petrochemical industry, medicine, pesticide, insecticide and herbicide, the types and output of organic compounds are increasing day by day. In the living environment, all kinds of industrial wastewater and domestic sewage directly enter the water body before reaching the national discharge standard. The organic compounds in industrial wastewater and domestic sewage degrade slowly, and when they enter the vadose zone and aquifer, their residues can last for tens or even hundreds of years, and the impact on the environment and the harm to human health are mostly irreversible. Among them, organic phenols and amin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/06C08F226/10C08F216/18C08J9/00B01J20/26B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/264B01J20/28016B01J20/28057B01J20/28083C02F1/285C02F2101/30C08F216/18C08F222/06C08F226/10C08J9/00C08J2329/10C08J2335/00C08J2339/06
Inventor 刘恒瑜
Owner SHANDONG WANDA CHEM CO LTD
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