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Functionalized graphene-polyurethane composite microsphere as well as synthesis method and application thereof

A technology of composite microspheres and synthesis methods, which is applied in the field of pollutant adsorption, and can solve problems such as poor adsorption performance

Inactive Publication Date: 2022-04-15
孙冰洁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyurethane has excellent mechanical properties, is non-toxic and non-polluting, and has broad application prospects in the field of pollutant adsorption, but the adsorption performance of ordinary polyurethane materials for organic pollutants is very poor. "Preparation Method of Permanent Polyurethane Sponge Adsorption Material" discloses that the polyurethane sponge modified by hybrid nanomaterials has the advantages of large adsorption capacity, high adsorption selectivity and good reusability. Therefore, polyurethane and functional graphene and other nanoparticles Composite to obtain the adsorption material with excellent adsorption performance

Method used

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  • Functionalized graphene-polyurethane composite microsphere as well as synthesis method and application thereof
  • Functionalized graphene-polyurethane composite microsphere as well as synthesis method and application thereof
  • Functionalized graphene-polyurethane composite microsphere as well as synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add N,N-dimethylacetamide and 100 parts by weight of hydroxylated graphene into the reaction bottle, and add 200 parts of 3,3',4,4'-biphenyl tetra Formic acid dianhydride was reacted at 50° C. for 6 hours in a nitrogen atmosphere, filtered after the reaction, and washed with deionized water and ethanol in sequence to obtain anhydrided graphene.

[0032] (2) Add toluene and 100 parts by weight of anhydride-modified graphene to the reaction bottle, disperse evenly, add 120 parts of 2-chloroethanol, heat to 100 ° C, reflux for 5 hours, filter after reaction, and use in turn Wash with ethanol and acetone to obtain chlorinated graphene.

[0033] (3) Add N,N-dimethylformamide, 100 parts by weight of chlorinated graphene and 150 parts of N,N-dihydroxyethylaniline into the reaction bottle, and heat up to 100°C after dispersing evenly The mixture was reacted for 12 hours, and after the reaction, it was filtered and washed with ethanol and acetone in sequence to obtain funct...

Embodiment 2

[0036] (1) Add N,N-dimethylacetamide and 100 parts by weight of hydroxylated graphene into the reaction bottle, and add 300 parts of 3,3',4,4'-biphenyl tetra Formic acid dianhydride was reacted at 60° C. for 12 hours in a nitrogen atmosphere, filtered after the reaction, and washed with deionized water and ethanol in sequence to obtain anhydrided graphene.

[0037] (2) Add toluene and 100 parts by weight of anhydride-modified graphene into the reaction bottle, add 200 parts of 4-chloro-1-butanol after dispersing evenly, heat to 120 ° C, reflux for 15 hours, after the reaction Filter and wash with ethanol and acetone in turn to obtain chlorinated graphene.

[0038] (3) Add N,N-dimethylformamide, 100 parts by weight of chlorinated graphene and 250 parts of N,N-dihydroxyethylaniline into the reaction bottle, and heat up to 140°C after dispersing evenly The mixture was reacted for 12 hours, and after the reaction, it was filtered and washed with ethanol and acetone in sequence to...

Embodiment 3

[0041] (1) Add N,N-dimethylacetamide and 100 parts by weight of hydroxylated graphene into the reaction bottle, and add 400 parts of 3,3',4,4'-biphenyl tetra Formic acid dianhydride was reacted at 60° C. for 12 hours in a nitrogen atmosphere, filtered after the reaction, and washed with deionized water and ethanol in sequence to obtain anhydrided graphene.

[0042] (2) Add toluene and 100 parts by weight of anhydride-modified graphene into the reaction bottle, add 280 parts of 5-chloro-1-pentanol after dispersing evenly, heat to 120 ° C, and reflux for 10 hours. After the reaction Filter and wash with ethanol and acetone in turn to obtain chlorinated graphene.

[0043] (3) Add N,N-dimethylformamide, 100 parts by weight of chlorinated graphene and 320 parts of N,N-dihydroxyethylaniline into the reaction bottle, and heat up to 120°C after dispersing evenly The mixture was reacted for 24 hours. After the reaction, it was filtered and washed with ethanol and acetone in sequence t...

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Abstract

The invention relates to the technical field of pollutant adsorption, and discloses a functionalized graphene-polyurethane composite microsphere, the polyurethane microsphere has a unique microporous structure, the polyurethane microsphere is grafted on the surface of graphene in situ to form a three-dimensional covalent network with graphene, the specific surface area of the formed space structure is larger, the adsorption sites are more, and the adsorption efficiency is improved. Graphene contains rich carboxyl and aryl quaternary ammonium salt active structures, pi-pi bond interaction can occur between aromatic rings in aryl quaternary ammonium salt and aromatic rings in phenol, phenol is easy to ionize to lose proton hydrogen, formed phenolic hydroxyl anions are electronegative, aryl quaternary ammonium salt has electropositive property, and therefore, the graphene can be used as a negative electrode material for the lithium ion battery. The functionalized graphene-polyurethane composite microsphere and the carboxyl group have electrostatic interaction, so that the functionalized graphene-polyurethane composite microsphere has an excellent adsorption effect on phenol pollutants, and the contained carboxyl group and quaternary ammonium salt also have good hydrogen bonding force and electrostatic adsorption effect on methyl orange.

Description

technical field [0001] The invention relates to the technical field of pollutant adsorption, in particular to a functionalized graphene-polyurethane composite microsphere and its synthesis method and application. Background technique [0002] Water pollution is a major social problem facing the world today. Pollutants mainly include inorganic pollutants and organic pollutants. Among them, organic pollutants such as organic solvents, dyes, phenols, polycyclic aromatic hydrocarbons, etc. are very toxic and difficult to degrade, causing serious damage to the water environment. Serious pollution has affected the growth and reproduction of aquatic organisms. At present, the treatment methods for organic pollutants in the water environment are mainly oxidation, adsorption, and membrane permeation. advantages have attracted much attention. [0003] Polyurethane has excellent mechanical properties, is non-toxic and non-polluting, and has broad application prospects in the field of ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/34C02F101/38
Inventor 孙冰洁
Owner 孙冰洁
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