Polar polymer microparticles, preparation method and applications thereof

A technology of polar polymers and microparticles, which is applied in the fields of alkali metal compounds, chemical instruments and methods, and water pollutants. High efficiency, high softness, and large adsorption capacity

Inactive Publication Date: 2020-01-07
山东万达化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of polar polymer microparticles comprises the following steps:

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

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

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

Embodiment 2

[0040] The preparation method of polar polymer microparticles comprises the following steps:

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

[0042] 2) maleic anhydride and tetrahydrofuran are added in the there-necked flask according to the solid-to-liquid ratio of 1:6 (g / mL), and the homogeneous solution is stirred until the MA is completely dissolved;

[0043] 3) adding N-vinylpyrrolidone, vinyl ether and lauroyl peroxide into the reaction vessel, emptying through nitrogen, and mixing uniformly to obtain a polymerization reaction system, and the mass fraction of lauroyl peroxide in the polymerization reaction system is 1.5%;

[0044] 4) The polymerization reaction system was heated up to 65 in 30 min, and the polymerization reaction was carried out at a stirring speed of 500 rpm for 4 h. After the reaction, the reaction was filtered, washed and dried to obtain P(MA-DE-NVP) microparticles.

Embodiment 3

[0046] The preparation method of polar polymer microparticles comprises the following steps:

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

[0048] 2) maleic anhydride and tetrahydrofuran are added in the there-necked flask according to the solid-to-liquid ratio of 1:6 (g / mL), and the homogeneous solution is stirred until the MA is completely dissolved;

[0049] 3) N-vinyl pyrrolidone, vinyl ether, lauroyl peroxide, hydroxyapatite and α-amino acid are added to the reaction vessel, emptied with nitrogen, and uniformly mixed to obtain a polymerization reaction system. In the polymerization reaction system, lauroyl peroxide is obtained. 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 polymerization reaction system was heated up to 65 in 30 min, and the polymerization reaction was carried out at a stirring speed of 500 rp...

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Abstract

The invention provides polar polymer microparticles as well as a preparation method and application thereof, and belongs to the technical field of polymer synthesis.The preparation method comprises the following steps: uniformly mixing maleic anhydride, N-vinylpyrrolidone, vinyl ether and an initiator in an organic solvent to obtain a polymerization reaction system, carrying out polymerization reaction under stirring, and after the reaction is finished, carrying out filtration, washing and drying to obtain the polar polymer microparticles, namely P (MA-DE-NVP) microparticles. The preparation method disclosed by the invention is simple and feasible, high in yield and capable of increasing the softness of the surfaces of the microparticles, so that the microparticles are easier to swell andmodify. The microparticles have hydrophilicity, relatively high specific surface area and adsorption capacity, small particle size, relatively narrow particle size distribution and relatively high adsorption capacity for hydrophilic substances, and can be used for adsorbing and separating organic pollutants in water body.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and particularly relates to polar polymer microparticles, a preparation method and uses thereof. Background technique [0002] With the development of industry in recent years, especially the rapid development of production industries such as organic chemicals, petrochemicals, medicines, pesticides, pesticides and herbicides, the types and output of organic compounds are increasing day by day. Due to the living environment, various industrial wastewater and domestic sewage directly enter the water body without 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 be maintained 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 amines are importan...

Claims

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Application Information

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Patent Type & Authority Applications(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 山东万达化工有限公司
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