Preparation method of magnetic hydrogel

A magnetic water and gel technology, applied in gel preparation, chemical instruments and methods, colloid chemistry, etc., can solve the problems of poor mechanical and magnetic properties of magnetic hydrogel, achieve good dispersion, increase dispersion performance, The effect of good dispersion performance

Inactive Publication Date: 2019-07-30
龙升
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem of poor mechanical properties and magnetic properties of the current magnetic hydrogel, the present invention provides a preparation method of the magnetic hydrogel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of additive is:

[0029] A. The composite titanium mixture and absolute ethanol are ultrasonically oscillated for 15 minutes at a mass ratio of 1:3 to 5, then add 2 to 4% inhibitor of the composite titanium mixture, stir and mix for 30 minutes, collect the stirred mixture, and mix the stirred mixture with 0.8 mol / L hydrochloric acid solution was mixed evenly according to the mass ratio of 3:3~5, and stood for 3 hours;

[0030] B. After standing still, add 10-15% composite polymer of composite titanium mixture, 3-5% sodium lauryl sulfate of composite titanium mixture and 2% ammonium bicarbonate of composite titanium mixture and mix evenly , Stir at 600r / min for 2h, spray dry, collect the dry matter, calcinate the dry matter at 400-450°C for 2h, collect the calcined matter, pulverize, pass through a 500 mesh sieve, and collect the sieved particles to obtain the additive.

[0031] The additive is made by mixing γ-aminopropyltriethoxysilane and polyv...

Embodiment 1

[0042] The composite titanium mixture is configured by mixing tetrabutyl titanate and titanium chloride at a mass ratio of 4:3.

[0043] The inhibitor is diethanolamine.

[0044] The composite polymer is formed by mixing polyethylene glycol and polystyrene microspheres in a mass ratio of 5:9.

[0045] The preparation method of additive is:

[0046] A. Sonicate the composite titanium mixture and absolute ethanol at a mass ratio of 1:5 for 15 minutes, then add 4% inhibitor of the composite titanium mixture, stir and mix for 30 minutes, collect the stirred mixture, and mix the stirred mixture with 0.8mol / L hydrochloric acid The solution was mixed evenly according to the mass ratio of 3:5, and stood for 3 hours;

[0047] B. After leaving standstill, add the composite polymer of composite titanium mixture quality 15%, the sodium lauryl sulfate of composite titanium mixture quality 5% and the ammonium bicarbonate of composite titanium mixture quality 2% and mix homogeneously, with...

Embodiment 2

[0059] The composite titanium mixture is configured by mixing tetrabutyl titanate and titanium chloride at a mass ratio of 4:2.

[0060] The inhibitor is methylethanolamine.

[0061] The composite polymer is formed by mixing polyethylene glycol and polystyrene microspheres in a mass ratio of 4:6.

[0062] The preparation method of additive is:

[0063] A. Sonicate the composite titanium mixture and absolute ethanol at a mass ratio of 1:4 for 15 minutes, then add 3% inhibitor of the composite titanium mixture, stir and mix for 30 minutes, collect the stirred mixture, and mix the stirred mixture with 0.8mol / L hydrochloric acid The solution was mixed evenly according to the mass ratio of 3:4, and stood for 3 hours;

[0064] B. After leaving standstill, add the composite polymer of composite titanium mixture quality 13%, the sodium lauryl sulfate of composite titanium mixture quality 4% and the ammonium bicarbonate of composite titanium mixture quality 2% mix homogeneously, with...

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PUM

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Abstract

The invention belongs to the technical field of hydrogel, and particularly relates to a preparation method of magnetic hydrogel. In the preparation process, calcium oxide is taken as a raw material, firstly, the raw material and nanometer titania are heated, then the effect of carbon dioxide is utilized, nano calcium carbonate is formed, and under the effect of an auxiliary agent, the nano calciumcarbonate is continuously combined with the nanometer titania; dispersion performance is added for polyvinylpyrrolidone, then the polyvinylpyrrolidone, ferric chloride and ferrous chloride are mixed,magnetic particles are formed and uniformly distributed on the surfaces of mixed particles at the same time, the crystal form is improved through a guiding agent, and finally, polyacrylamide is formed for wrapping; groups on the surfaces of the particles can be combined with polyacrylamide well, the effect is utilized that the nano calcium carbonate is combined with the nanometer titania, gaps can be formed well for loading the magnetic particles, and by utilizing formation of a nano-substance, the mechanical performance and magnetic performance of the hydrogel can be effectively improved.

Description

technical field [0001] The invention belongs to the field of hydrogel technology, and in particular relates to a preparation method of magnetic hydrogel. Background technique [0002] Magnetic hydrogels can exhibit various deformations such as elongation, contraction, or bending under the action of a magnetic field, but the network structure of the gel will not be damaged. Magnetic gels have unique flexibility and permeability in targeted drug release, It has a wide range of applications in cell separation and labeling, protein adsorption and separation. Due to its good biocompatibility and sensitivity to external stimuli, intelligent hydrogels synthesized from natural polymers are widely used in chemical converters, chemical memories, memory switches, sensors, artificial muscles, enzyme immobilization, and tissue engineering. , drug release, and molecular separation systems have good application prospects. Compared with ordinary hydrogels, natural polymer hydrogels have at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
CPCB01J13/0052
Inventor 龙升
Owner 龙升
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