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Method for preparing three-dimensional ordered macroporous material by using water-soluble colloidal crystal as template

A water-soluble colloid, three-dimensional ordered technology, applied in climate sustainability, sustainable manufacturing/processing, silica, etc., to achieve good gloss and chemical structure, size uniformity, maintain gloss and chemical structure effect

Active Publication Date: 2013-02-13
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method creatively proposes to prepare colloidal crystal templates by preparing water-soluble monodisperse polyacrylamide nano-microspheres. When preparing three-dimensional ordered macroporous materials, water can be used as a solvent to remove the templates, thereby opening up a method for preparing three-dimensional ordered macroporous polymers. The new method of material has not been reported at home and abroad

Method used

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  • Method for preparing three-dimensional ordered macroporous material by using water-soluble colloidal crystal as template
  • Method for preparing three-dimensional ordered macroporous material by using water-soluble colloidal crystal as template
  • Method for preparing three-dimensional ordered macroporous material by using water-soluble colloidal crystal as template

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Preparation of three-dimensional ordered macroporous cross-linked polyacrylonitrile with a pore size of about 300 nm

[0048] (1) Preparation of 300nm water-soluble polyacrylamide colloidal crystal template

[0049] Add 2.6923g (5.98% of the total mass percentage of the material) AM and 2.6923g (5.98% of the total mass of the material) of PVP into the three-necked bottle, and then add 20mL (20g of 44.45% of the total mass of the material) distilled water and 25mL (19.5g accounts for 43.34% of the total mass of the material) tert-butanol, bubble argon into the solution, heat to 75°C in a water bath or oil bath, react under the protection of argon, and stir until the solution is heated to 75°C ℃ and the system is stable, add the initiator 0.1122g (accounting for 0.25% of the total mass percentage of the material) AIBN into the three-necked flask, the stirring speed is 80r / min, the temperature is controlled at about 75℃, stop the reaction after 7h, and the obtained milk T...

Embodiment 2

[0054] Preparation of Three-Dimensional Ordered Crosslinked Polystyrene with Pore Size About 500nm

[0055] (1) Preparation of 500nm water-soluble polyacrylamide colloidal crystal template

[0056] Add 5.0804g (10% of the total mass percentage of the material) AM and 3.0482g (6% of the total mass of the material) of PVP into the three-necked bottle, and then add 15mL (15g of 29.53% of the total mass of the material) distilled water and 35mL (27.65g accounts for 54.42% of the total mass of the material) ethanol, bubbles argon into the solution, heats it to 75°C in a water bath or an oil bath, reacts under the protection of argon, and stirs until the solution is heated to 75°C and When the system is stable, add the initiator 0.0254g (0.05% of the total mass percentage of the material) AIBN into the three-necked flask, the stirring speed is 70r / min, the temperature is controlled at about 75°C, stop the reaction after 7h, and the obtained emulsion Removed, centrifuged at 3000r / mi...

Embodiment 3

[0061] Preparation of Three-Dimensional Ordered Macroporous Polymethylmethacrylate with Pore Size About 200nm

[0062] (1) Preparation of 200nm water-soluble polyacrylamide colloidal crystal template

[0063] Add 24g (20mL water, 24.4892% of the total mass percentage of 4g AM of the material) acrylamide aqueous solution and 5.8g (5.9182% of the total mass of the material) of Span80, 5.8g (5.9182% of the total mass of the material) in the three-necked flask Tween80, then add 80mL (62.4g accounted for 63.6718% of the total mass of the material) cyclohexane, bubble argon into the solution, heat to 30 ° C, react under the protection of argon, and stir, when the system is stable 0.0025g of the initiator ammonium persulfate (0.0026% of the total mass of the material) was added to the three-necked flask, the timing was started, the reaction was stopped after 5h, the obtained emulsion was removed, centrifuged at 3000r / min or naturally settled to obtain a monodisperse Polyacrylamide c...

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Abstract

The invention provides a method for preparing a three-dimensional ordered macroporous material by using a water-soluble colloidal crystal as a template. The method comprises the steps of preparing the colloidal crystal template by using the prepared water-soluble monodisperse polyacrylamide nanoparticles and removing the template by using water as the solvent to obtain the three-dimensional ordered macroporous material. The invention develops a new method for preparing three-dimensional ordered macroporous polymer. Comparing with the traditional hydrofluoric acid etching and calcining, the method provided by the invention can maintain the gloss and chemical structure of the polymer, and is also energy-saving and environment-friendly.

Description

technical field [0001] The technical solution of the invention relates to the fields of polymer materials and inorganic porous materials, in particular to the preparation of three-dimensional ordered macroporous materials using water-soluble nanometer microspheres as colloidal crystal templates. Background technique [0002] Three-dimensionally ordered macroporous materials (3DOM), also known as inverse opals, refer to highly monodisperse spherical pores with uniform pore size that are highly uniformly dispersed in three-dimensional space. It is a new type of material in the matrix (polymer, inorganic oxide, semiconductor material, metal, etc.), and each hole is connected with a small hole. Compared with other porous materials, three-dimensional ordered macroporous materials have a unique and well-arranged macroporous structure, which not only has the characteristics of single pore size and orderly arrangement of pore structure in three-dimensional space, but also has large ...

Claims

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Application Information

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IPC IPC(8): C08L33/20C08L25/06C08L33/12C08F120/44C08F112/08C08F120/14C08F120/56C08J9/26C01B33/12C01G23/053
CPCY02P20/10
Inventor 张旭李雅宁王小梅刘盘阁
Owner HEBEI UNIV OF TECH
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