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Controllable preparation method of magnetic halloysite surface nano imprinting composite material

A composite material and halloysite technology, which is applied in the field of controllable preparation of magnetic halloysite surface nano-imprinted composite materials, can solve problems such as thickness control and uniform coating of difficult-to-polymerize layers, and achieve good thermal stability and magnetic stability. performance, excellent regeneration performance

Inactive Publication Date: 2014-03-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current commonly used surface imprinting technology still has many technical difficulties: for example, it is difficult to achieve uniform coating of the polymer layer and control the thickness at the nanometer level, etc.

Method used

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  • Controllable preparation method of magnetic halloysite surface nano imprinting composite material
  • Controllable preparation method of magnetic halloysite surface nano imprinting composite material
  • Controllable preparation method of magnetic halloysite surface nano imprinting composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Preparation of magnetic halloysite

[0030] According to the ratio of ethanol: halloysite (HNTs): ferric nitrate nonahydrate mass ratio of 20:0.5:0.4 (g / g / g), add ethanol, halloysite and ferric nitrate nonahydrate to the beaker in sequence, ultrasonically disperse Homogeneously, stir magnetically at room temperature for 12 h, and at 90 o C oven dry. After grinding, put it into a magnetic boat, add a certain amount of ethylene glycol (EG) dropwise, fully immerse for 12 h, and heat in a tube furnace at 3.0 o C / min heating up to 400 o C, Calcined at this temperature for 1.0 h, the calcined product was washed with ethanol several times, and dried to constant weight to obtain magnetic halloysite (MHNTs).

[0031] (2) Magnetic Halloysite Surface Modified Vinyl

[0032] According to the ratio of magnetic halloysite: 3-(methacryloyloxy)propyltrimethoxysilane (KH570):toluene mass ratio of 1.0:1.0:100 (g / g / g), add to the three-necked flask in sequence Magnetic halloysit...

Embodiment 2

[0036] (1) Preparation of magnetic halloysite

[0037] According to the ratio of ethanol: halloysite (HNTs): ferric nitrate nonahydrate mass ratio of 20:2.0:1.0 (g / g / g), add ethanol, halloysite and ferric nitrate nonahydrate to the beaker in sequence, ultrasonically disperse Homogeneously, stir magnetically at room temperature for 18 h, and at 90 o C oven dry. After grinding, put it into a magnetic boat, add a certain amount of ethylene glycol (EG) dropwise, fully immerse for 12 h, and heat it in a tube furnace at 5.0 o C / min heating up to 400 o C, Calcined at this temperature for 3.0 h, the calcined product was washed with ethanol several times, and dried to constant weight to obtain magnetic halloysite (MHNTs).

[0038] (2) Magnetic Halloysite Surface Modified Vinyl

[0039] According to the ratio of magnetic halloysite: 3-(methacryloyloxy)propyltrimethoxysilane (KH570): toluene mass ratio of 1.0:3.0:100 (g / g / g), add to the three-necked flask in sequence Magnetic hall...

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Abstract

The invention relates to a controllable preparation method of a magnetic halloysite surface nano imprinting composite material and belongs to the technical field of the preparation of environmental function materials. The method is as below: introducing trivalent iron ions into an inner cavity and outer surface of a halloysite nanotube through a dipping method, and preparing magnetic halloysite by ethylene glycol reduction under high temperature; conducting vinyl functionalization modification on the surface by using 3-(methacryloyloxy) propyl trimethoxy silane; conducting precipitation polymerization on the surface of the vinyl modified halloysite nanotube by using acetonitrile as a solvent, tetracycline as a template moleculue, methacrylic acid as the functional monomer, ethylene glycol dimethacrylate as a crosslinking agent and azodiisobutyronitrile as an initiator; removing the template molecule through Soxhlet extraction by a mixed solution of methanol and acetic acid, so as to obtain the magnetic halloysite surface nano imprinting composite material, which can be applied to tetracycline selective recognition and magnetic separation in water environment. The molecular imprinting polymerization layer coated on the surface of the magnetic halloysite has uniform thickness, and the size can be changed by adjusting the amount of polymerization monomers.

Description

technical field [0001] The invention relates to a controllable preparation method of nano-imprinted composite materials on the surface of magnetic halloysite, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] At present, antibiotics are widely used in fields such as agriculture, animal husbandry, and disease treatment. However, most antibiotics are transferred to the environment with excrement, which can have adverse effects on ecosystems and their accumulation in organisms can inhibit the growth of organisms. Tetracycline antibiotics have good antibacterial activity against serious diseases caused by Gram-positive and Gram-negative, so they are widely used in human and animal disease prevention and treatment or as poultry feed additives. However, tetracycline is poorly digested and absorbed in the body, so most of it does not participate in metabolism and is excreted from the body. It still maintains bio...

Claims

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Application Information

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IPC IPC(8): C08F292/00C08F222/14C08F220/06C08J9/26B01J20/26B01J20/28C01B33/26
Inventor 戴江栋赵春艳周志平邹永立邹天边李春香闫永胜
Owner JIANGSU UNIV
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