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Preparation method of functionalized magnetic microspheres, magnetic microspheres and application thereof

A magnetic microsphere and functionalization technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of poor suspension of magnetic microspheres, high cost of waste liquid treatment, poor hydrophilicity, etc., and achieve high recovery rate and stable suspension. The effect of increased sex and good hydrophilicity

Active Publication Date: 2021-01-22
SICHUAN ANKERUI NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the research, it was found that the existing methods for preparing magnetic microspheres have certain limitations, such as the poor suspension of the prepared magnetic microspheres, and they are easy to coagulate and settle when left standing; the hydrophilicity is also poor, and they are easy to stick to the wall; Need to use a large amount of organic solvent, resulting in high cost of waste liquid treatment

Method used

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  • Preparation method of functionalized magnetic microspheres, magnetic microspheres and application thereof
  • Preparation method of functionalized magnetic microspheres, magnetic microspheres and application thereof
  • Preparation method of functionalized magnetic microspheres, magnetic microspheres and application thereof

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Embodiment 1

[0060] refer to figure 1 The schematic diagram of the preparation process shown in the preparation of functionalized magnetic microspheres, including the following steps:

[0061] Step 1: Preparation of magnetic bulbs

[0062] Take 10g of ferrous chloride tetrahydrate and 15g of ferric chloride hexahydrate in 150mL of ultrapure water, set the stirring speed to 200rpm, stir for 30min to fully mix the solution, then raise the temperature to 60°C, then add 10mL of ammonia water, and react After 30 minutes, the temperature was raised to 80°C and aged for 1 hour to obtain superparamagnetic nano-magnetic particles with a particle size of about 5-15 nm, that is, to obtain magnetic seed bulbs. figure 2 and image 3 show; combine figure 2 and image 3 It can be seen that the prepared magnetic seed bulbs are basically spherical, and have a good crystal structure, complete and uniform crystal shape, a particle size of about 10nm, and the magnetic seed bulbs have superparamagnetism....

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Abstract

The invention belongs to the technical field of functionalized magnetic materials, and particularly discloses a preparation method of functionalized magnetic microspheres, the prepared magnetic microspheres and an application thereof. The preparation method of the functionalized magnetic microspheres comprises the following steps: preparing magnetic seed balls; performing surface hydrophilic modification on the magnetic seed balls to obtain hydrophilic magnetic particles; and carrying out surface functional modification on the hydrophilic magnetic particles to prepare functional magnetic microspheres; wherein the surface functional modification comprises silicon hydroxyl modification and sulfonation modification. According to the functionalized magnetic microsphere prepared by the invention, due to the combined action of silicon hydroxyl and sulfonic acid group, the stability of the microsphere is remarkably improved, the suspension property is good, the hydrophilicity is good, and theproblem of wall adhesion of the magnetic microsphere is effectively solved.

Description

technical field [0001] The invention relates to the technical field of functionalized magnetic materials, in particular to a method for preparing functionalized magnetic microspheres, the prepared magnetic microspheres and applications thereof. Background technique [0002] Magnetic microspheres are a widely used material in the field of in vitro diagnostics. By introducing functional groups on the surface, the functionalized magnetic microspheres not only have many characteristics of ordinary microspheres, but also have magnetic responsiveness, which can be applied In the purification, concentration, separation and detection of biological materials. [0003] At present, there are two main methods for surface functional modification of magnetic microspheres, one is through copolymerization, and the other is surface modification. Surface functional modification can endow magnetic microspheres with functional groups on the surface, such as hydroxyl (-OH), carboxyl (-COOH), al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02
CPCB01J13/02
Inventor 龙腾镶王保宁孙俊芝刘枫周婷宁艳强
Owner SICHUAN ANKERUI NEW MATERIAL TECH CO LTD
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