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Heteroatom doped polymer nano-microsphere and preparation method thereof

A nano-microsphere and polymer technology, which is applied in the field of heteroatom-doped polymer nano-microspheres and the preparation thereof, can solve the problems of long time, high reaction temperature, complicated operation, etc. The effect of promoting the application

Active Publication Date: 2018-11-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction temperature is high, the time is long, and the operation is complicated

Method used

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  • Heteroatom doped polymer nano-microsphere and preparation method thereof
  • Heteroatom doped polymer nano-microsphere and preparation method thereof
  • Heteroatom doped polymer nano-microsphere and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Dissolve 10g (0.08mol) of melamine and 3.01g (0.016mol) of 2,4-diaminobenzenesulfonic acid in 2000mL of water, add dropwise 5mL of ammonia water, stir at 25°C and 500rpm until the solution is uniform and transparent. Add 50 mL of formaldehyde solution, and after about 3 minutes, the liquid becomes obviously turbid. Keep at 25°C, stir at 500rpm for 2 hours, centrifuge, wash and dry, and observe with electron microscope, as shown in figure 1 As shown, the nano-microspheres are uniform, and the average particle diameter is 512nm.

Embodiment 2

[0071] Dissolve 0.19g (0.0015mol) of melamine and 0.058g (0.0003mol) of 2,4-diaminobenzenesulfonic acid in 50mL of water, add 0.1mL of ammonia water dropwise, at 5°C, 15°C, 25°C, 35°C, 45°C Next, stir at a stirring speed of 500rpm until the solution is uniform and transparent. Add 1.2 mL of formaldehyde solution, and after about 45 seconds, the liquid turns from clear to cloudy. Keeping the temperature, stir at 500rpm for 2 hours. After the reaction is completed, centrifugation, washing, drying, and electron microscope observation are performed to obtain nitrogen-sulfur-containing polymer nanometer microspheres. Such as figure 2 As shown, the temperature conditions of a to e are 5°C, 15°C, 25°C, 35°C, and 45°C in sequence. The nanospheres are uniform and the average particle diameters are 148nm, 257nm, 513nm, 627nm, and 845nm.

Embodiment 3

[0073] 0.19g (0.0015mol) melamine, 0.0145g (0.000075mol), 0.029g (0.00015mol), 0.058g (0.0003mol), 0.116g (0.0006mol), 0.174g (0.0009mol) 2,4-diaminobenzene Dissolve the sulfonic acid in 50mL of water, add 0.1mL of ammonia water dropwise, and stir at 25°C at a stirring speed of 500rpm until the solution is uniform and transparent. Add 1.2 mL of formaldehyde solution, and after about 45 seconds, the liquid turns from clear to cloudy. Keep at 25°C and stir at 500rpm for 2 hours. After the reaction is completed, centrifugation, washing, drying, and electron microscope observation are performed to obtain nitrogen-sulfur-containing polymer nanometer microspheres. Such as image 3 As shown, the dosage of a~e2,4-diaminobenzenesulfonic acid is 0.0145g (0.000075mol), 0.029g (0.00015mol), 0.058g (0.0003mol), 0.116g (0.0006mol), 0.174g (0.0009mol ), the nanospheres are uniform, and the average particle size is 793nm, 624nm, 496nm, 307nm, 169nm.

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Abstract

The invention discloses a heteroatom doped polymer nano-microsphere and a preparation method thereof. The method includes: under a stirring condition, adopting a mild reaction temperature (10-50DEG C), using aromatic amine and aldehyde as the raw materials, in the presence of a compound shown as general formula I in the specification, letting aldehyde and the compound shown as general formula I generate Schiff base in an aqueous solution system, and subjecting aromatic amine and the generated Schiff base to addition, thus obtaining the heteroatom doped polymer nano-microsphere. The technological method adopted by the invention has the characteristics of simple operation, mild conditions and fast reaction. The nano-microsphere product prepared by the method has the advantages of controllable size and morphology, uniform particle size, large yield, and uniform heteroatom doping, thus having good application prospects.

Description

technical field [0001] The invention belongs to the technical field of new nanometer materials, and in particular relates to a heteroatom-doped polymer nanosphere and a preparation method thereof. Background technique [0002] Heteroatom-doped polymer nanospheres have great potential in carbon dioxide adsorption and separation, labeling and detection, flame retardancy, removal of metal ions in water, gas storage and separation, synthesis of hollow nanospheres and porous nanomaterials by hard template method. application potential, has received extensive attention in recent years. Doping non-metallic heteroatoms on the carbon skeleton, such as sulfur, nitrogen, boron, phosphorus or multiple heteroatoms, can effectively improve its application performance. For example, nitrogen-doped polymer nanospheres have better CO 2 Adsorption properties. At present, the research on the doping of non-metallic heteroatoms is mainly focused on the doping of a single non-metallic heteroatom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/34B01J13/14C01B21/086
CPCB01J13/14C01B21/086C01P2002/85C01P2004/04C08G12/34
Inventor 吕荣文刘明辉刘盈岑林华
Owner DALIAN UNIV OF TECH
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