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A kind of magnetic porous polymer functional nano microsphere and preparation method thereof

A porous polymer, functional nanotechnology, applied in the direction of magnetism of organic materials/organic magnetic materials, to achieve unique adsorption advantages, expand application scope, and widen application value.

Active Publication Date: 2017-07-11
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Liu et al. (Liu J, Qiao S Z, Liu H, et al. Angewandte Chemie International Edition, 2011, 50(26): 5947-5951.) used resorcinol and formaldehyde as raw materials, using the classic method of preparing silica Stober A monodisperse phenolic resin microsphere with a particle size of about 500nm was prepared under hydrothermal conditions, but there was no magnetic response and no porous structure on the surface.

Method used

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  • A kind of magnetic porous polymer functional nano microsphere and preparation method thereof
  • A kind of magnetic porous polymer functional nano microsphere and preparation method thereof
  • A kind of magnetic porous polymer functional nano microsphere and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Preparation of base-catalyzed phenolic resin prepolymer:

[0034] Accurately weigh 1.25g of sodium hydroxide and ultrasonically disperse in 5g of deionized water to form 6.25g of sodium hydroxide aqueous solution. Take 5g of the solution and 25g of phenol into a 250mL three-neck flask, stir mechanically at 45°C for 20min, let it fully dissolve, then add 33g of formaldehyde solution dropwise, and the dropping rate is controlled at about 1 drop / second. After the dropwise addition, raise the temperature of the system to 60°C. After the temperature stabilizes, react for 1.5 hours, add the remaining 1.25g of the aforementioned sodium hydroxide solution into the system, continue the reaction for 10 minutes, and then drop in 9g of formaldehyde solution at the same speed , after the dropwise addition, raise the temperature of the reaction system to 70°C, keep it warm for 30 minutes, then raise the temperature to 95°C, take the reaction off after 1 hour, and rotatively evapor...

Embodiment 2

[0040] 1) with embodiment 1.

[0041] 2) The consumption of ferric chloride hexahydrate in embodiment 1 is adjusted to 0.10g respectively, all the other consumptions and steps are with embodiment 1.

Embodiment 3

[0043] 1) with embodiment 1.

[0044] 2) The consumption of ferric chloride hexahydrate in embodiment 1 is adjusted to 0.20g respectively, and all the other consumptions and steps are the same as embodiment 1.

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Abstract

The invention discloses a magnetic porous polymer functional nano-microsphere and a preparation method thereof. The surface has a rough porous structure, polystyrene is used as a spherical matrix, and phenolic resin is used as a supporting frame. The magnetic nanoparticles form a coordination effect, and the magnetic iron ferric oxide nanoparticles are loaded on the ball. The raw material components include materials in the following proportions: ferric chloride hexahydrate 0.02~0.20g, alkali-catalyzed phenolic resin prepolymer 0.1 ~0.4g, ethylene glycol 3~13mL, polyvinylpyrrolidone 0.01~0.05g, sodium acetate trihydrate 0.1~0.3g and styrene 0.5~2.0mL. The present invention proposes a simple and feasible one-step solvothermal method to prepare a uniform and stable magnetic porous polymer functional nanometer with a particle size of about 400 nm, which has a magnetic response, a porous surface structure, and functional groups. Microspheres, with unique adsorption advantages.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and in particular relates to a magnetic porous polymer functional nanometer microsphere and a preparation method thereof. Background technique [0002] Size-controllable monodisperse nanoscale polymer functional microspheres are widely used in the fields of chemistry, chemical engineering, materials, biology and medicine, and are an important class of functional nanomaterials. Among them, magnetic porous polymer functional nanospheres have attracted extensive attention in recent years due to their combination of magnetic response, small particle size, porous structure, large specific surface area and functionalization, especially in nuclear magnetic imaging, biomedical , chromatographic adsorption, separation and purification, controlled drug release, and synthetic catalysis have great potential application prospects. [0003] At present, the methods for synthesizing magne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/42C08G8/10
Inventor 戴李宗谢泓辉袁丛辉毛杰许一婷王爽刘诚罗伟昂何凯斌
Owner XIAMEN UNIV